RIO DE JANEIRO (AP) â¿¿ Two foreign tourists were held for hours, brutalized and one of them sexually assaulted aboard a public transport van they boarded in Rio de Janeiro's showcase Copacabana beach neighborhood, police said in a statement. Two men aged 20 and 22 have been taken into custody and a third is being sought in connection with the incident, which saw the two foreigners held for around six hours starting shortly after midnight on Saturday, police said. The statement said the suspects forced other passengers to get out of the van and then sexually assaulted the female tourist inside the vehicle, which was one of a fleet of vans that serve bus routes and seat about a dozen people. During the alleged assault, the tourists were driven to the poor suburban neighborhood of Sao Goncalo, where the two suspects were apprehended, the statement said. The victims' nationalities have not been released, but local media reports have said the woman is American. Reports said the two had been studying Portuguese in Rio for about a month and that both left the country following the incident. The statement said one of the victims' 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, the statement said. The Globo television network broadcast surveillance camera images of two men filling up the white van and showed police images of a metal bar the suspects are thought to have used to beat and intimidate the victims. The victims positively identified the two suspects, and a Brazilian woman has said she'd also been assaulted by the pair on March 23, the statement said. Multiple calls to police seeking further detail Monday have not been returned. The incident raises new questions about security in Rio, which has cracked down on once-endemic drug violence in preparation for hosting next year's soccer World Cup and the 2016 summer Olympic games.