Civil Police via AFP / Getty Images

Mugshots released by Brazil's Civil Police showing Jonathan Froudakis de Souza, 20, left, and Wallace Aparecido Silva, 22, who allegedly raped an American tourist in a minibus in Rio de Janeiro on Saturday.

An American woman was gang raped and beaten aboard a public transport van while her French boyfriend was shackled, hit with a crowbar and forced to watch the attacks after the pair boarded the vehicle in Rio de Janeiro's showcase Copacabana beach neighborhood, police said.

A third man, aged 21, was arrested for the attacks, which took place over six hours starting shortly after midnight on Saturday, police said in a Tuesday statement. Two men aged 20 and 22 had already been taken into custody for the attacks, police said, and a young Brazilian woman has come forward to say that she, too, was raped by the same men in the van on March 23.

"The victims described everything in great detail, mostly the sexual violence," police officer Rodrigo Brant told the Globo TV network. "Just how they described the facts was shocking — the violence and brutality. It surprised even us, who work in security and are used to hearing such things. Their report shocked us."

The incidents raise new questions about security in Rio, which has cracked down on once-endemic drug violence in preparation for hosting next year's football World Cup and the 2016 Summer Olympic games. The city will also be playing host to World Youth Day, a Roman Catholic pilgrimage that will be attended by Pope Francis and is expected to draw some 2 million people in late July.

Officials from the local Olympic and World Cup organizing committees didn't immediately respond to requests for comment.

The attack also drew comparisons with the fatal December beating and gang rape of a young woman on a New Delhi bus. Six men beset a 23-year-old university student and male friend after they boarded a private bus, touching off a wave of protests across India demanding stronger protection for women. Officials there say tourism has dropped in the country following the attacks.

In the Brazil case, a police statement said the suspects forced other passengers to get out of the van and then raped the female tourist inside the vehicle, which was one of a fleet of vans that serve bus routes and seat about a dozen people.

Such van services are often linked to organized crime in Rio, particularly the militias largely composed of former police and firemen that control large swaths of the city's slums and run clandestine services such as transportation and sell cooking fuel and illegal cable TV hookups. In general, tourists avoid the vans and opt for regular buses or taxis.

Sexual assaults on tourists are not common in Rio, with muggings and petty crime reported more frequently.

During the assault, the two foreigners were driven to the poor neighborhood of Sao Goncalo, where the two suspects were apprehended, a police statement said.

Reports said the two foreigners had been studying Portuguese in Rio for about a month and both left Brazil following the attack.

The police statement said that one victim's cellphone was found in the suspects' possession. The suspects had also used a debit card belonging to one of the victims at two gas stations, it said.

The Globo television network broadcast surveillance camera images of two men filling up the white van and showed police images of a crowbar the suspects used to beat and intimidate the victims. The victims positively identified the two suspects.

In an interview with Globo television, commanding officer Alexandre Braga, who heads the Rio police unit specializing in crimes against tourists, said the suspects had gone on a sex crime spree.

"The characteristics of both crimes, both the Brazilian case and the one with the foreigners, lead us to believe that they [the suspects] wanted to have a 'party of evil,' in quotes," Braga said. "The principal motive appears to have been the satisfaction of their lust."

He added that the robbery and other crimes appear to have been "secondary."

Multiple calls to police seeking further details on Tuesday were not immediately returned.

In Brazil, more than 5,300 cases of sexual assault were reported between January and June 2012, according to the country's Health Ministry.

Related:

Female tourists shun India after gang-rape, murder

Six arrested in India for gang-rape of Swiss tourist

This story was originally published on Mon Apr 1, 2013 5:26 PM EDT

China's Public Security Bureau

China's Public Security Bureau's graphic announcement about the crackdown on illegal immigrants in Beijing. The Chinese characters say: 'Illegal immigrants, illegal residence, illegal work' and the fist graphically spells out the crackdown.

BEIJING – China has launched a 100-day crackdown against illegal immigration and illegal employment in the wake of a high-profile sexual assault case involving a British national who was videotaped allegedly attempting to force himself on a Chinese woman.

The disturbing three-minute video surfaced on the Internet last week and has been viewed more than 8 million times on the Chinese video-sharing website youku.com, provoking outrage across China’s web-sphere.

The clip of the May 8 incident shows the 25-year-old British man standing over a sobbing  Chinese woman on a street median before a Good Samaritan came to her rescue.  Following a brief scuffle, the attacker was then shown lying unconscious on the street before he is suddenly kicked by another nearby bystander – much to the approval of netizens who commented online.

Police arrived soon afterward and detained the man, who was reportedly intoxicated, for sexual assault. He is allegedly still in detention, pending an investigation.   

Officials from China’s Public Security Bureau told NBC News that their summer-long campaign against illegal immigration and illegal employment is simply an enforcement of procedures already in place and wouldn’t comment on whether this crackdown was the result of the attack.

The tactics the Public Security Bureau announced they would use are similar to the ones employed in 2007 and during the run-up to the 2008 Summer Olympics in Beijing. Namely, spot checks of foreigners in Beijing neighborhoods frequented by expatriates, like the Sanlitun bar district and the university district of Haidian.

Police will also create a special hotline so the public can report suspicious foreigners. Security officials will also conduct door-to-door checks of homes owned or rented by foreigners to check visas and housing permits. Chinese state television, CCTV, also quoted Professor Xiang Dang of the Chinese People's Public Security University as saying that the National People’s Congress Standing Committee was also considering creating special detention centers to hold foreigners found without valid visas.

‘Foreigner vs. Chinese’
All of this is part of a multi-prong campaign ostensibly to rein in immigrants who commit crimes, have over-stayed their visas or work illegally in the mainland.

Despite the claims that this was merely a step-up of routine procedures, the tone of the announcement of the campaign – posted on China’s Twitter-like service Weibo – suggests a renewed urgency on the part of Chinese police.  In the announcement, a fist is seen smashing down on three words: Illegal immigrants, illegal residence, illegal work.

News of the campaign was unfortunately greeted with some anti-foreigner stereotyping – a common “foreigner versus Chinese” practice lamented in a column in the Chinese newspaper Global Times. 

But the police crackdown was generally seen as a positive development online. On Weibo one user wrote: “[The campaign] should have happened earlier! If we don’t do this, there will be more cases of foreigners raping Chinese girls!”

Another user, however, noted, “In fact, we don’t need this campaign now. Any foreigner who has seen the video or heard about this incident will behave. That’s the best lesson.”

Throughout the day on Tuesday, “illegal foreigner” was a Top 10 trending topic on Weibo.

But missing from much of the public discussion online was the fact that the Briton believed to have sparked this new campaign was in China on a valid tourist visa.

Growing issue: illegal immigration
Though the timing of the Public Security Bureau’s campaign suggests a desire to associate the video with a toughening-up on street crime committed by foreigners, the focus of the campaign –checking documentation of foreigners – seems to be centered more on dealing with illegal immigration.

A Global Times article on the crackdown noted that China rounded-up about 20,000 illegal immigrants last year and – just like the United States – had no idea just how many were still in the country.

“It's very difficult for China to deal with the problem,” the Global Times wrote. “China lacks experience, hasn't made full preparations, and does not even know the exact number of illegal immigrants right now.”  

The Global Times – typically a nationalistic leaning paper – appeared to be using the crackdown as an occasion to acknowledge the country’s need for immigration reform.

“China should create favorable and legal conditions for foreigners to live and work in the country,” the article states. “On the other hand, China should be decisive in cracking down on illegal immigrants. It cannot afford to be an immigrant destination at this early stage.”  

If the tenet about citizens of poor countries chasing opportunity in richer nations holds true, the 20,000 illegal immigrants China dealt with this year will very soon pale in comparison to the number of illegal immigrants in the United States as of 2011: 11.5 million.

Correction: May 17, 2012

An earlier version of this post noted that a member of the National People's Congress Standing Committee told CCTV that it was considering creating special detention centers to hold foreigners without valid visas. It was Professor Xiang Dang of the Chinese People's Public Security University, not a member of the National People's Standing Committee who made that comment.