AP Photo/Michael Sohn

Responding to the robbery of U.S. swimmer Ryan Lochte and three of his Olympic teammates, a spokesman for the Rio organzing committee has apologized and said security officials are being urged to increase their vigilance over the final week of the games.
"We obviously regret that the violence has (gotten) so close to athletes," Rio Games spokesman Mario Andrada said Monday morning. "We have requested security authorities that they need to make sure everybody's safe everywhere in the city. We apologize to those involved. Once again, we regret that violence is still an issue at these games."
Street crime was a major concern of Olympic organizers going into the games. Brazil deployed 85,000 soldiers and police to secure the games, twice as many as Britain used during the 2012 London Olympics.
Among the problems on that front so far:
_ A Brazilian security officer was fatally shot after taking a wrong turn into a dangerous favela, or slum.
_ Two Australian rowing coaches were attacked and robbed by two assailants in Ipanema.
_ Portugal's education minister was held up at knifepoint on a busy street.
_ A Turkish journalist claimed she was attacked.
_ Stray bullets have twice landed in the equestrian venue.
_ Two windows were shattered on a bus carrying journalists; Rio organizers said a probe showed the bus was hit by rocks, others claimed it was struck by was gunfire.
Through the U.S. Olympic Committee, Lochte said he and fellow U.S. swimmers Gunnar Bentz, Jack Conger, Jimmy Feigen were robbed when the taxi they were in early Sunday was stopped by people posing as police officers.
Lochte told NBC that one of the robbers held a gun to his forehead. The swimmers have said they are fine. All four were gold medalists from relay events in Rio.