Police said they would not release the identities or nationalities of the victims , but the U.S. Embassy said Monday that one of the two is an American citizen , and a U.S. State Department official on Monday said the woman raped was a U.S. citizen . NEW : U.S. State Dept official says rape victim was female U.S. citizen . The woman is now in the custody of a local police department and will be charged with aggravated sexual abuse, according to the official. A male passenger on the minibus also is held captive and robbed , police say . The incident highlights security concerns in Rio before upcoming high-profile events .
NEW : U.S. State Dept official says rape victim was female U.S. citizen . The woman is now in the custody of a local police department and will be charged with aggravated sexual abuse, according to the official. A male passenger on the minibus also is held captive and robbed , police say . The incident highlights security concerns in Rio before upcoming high-profile events .