The latest report incident was with Ryan Lochte and his fellow swimmers who were stopped and robbed by armed men while in a taxi — Ryan Lochte and Others Robbed at Rio Olympics 2016
Prior to that these are the following incidents reported so far
August 11 – Russian swimmer Evgeny Korotyshkin who is not a competitor was robbed and was able to take a photo of the two armed men and had it posted on instagram, however, it seems he has taken it down
August 6 – An attempted robbery againts opening ceremony security co-ordinator as he left the Maracana stadium the morning after, it was reported that his guards opened fire on the assailants, one was killed
August 6 – Robbery against Portuguese education minister in Ipanema as he came from a cycling event
August 6 – A bullet tore through the tent and entered the equestrian media centre
#Rio2016 security are investigating after a bullet reportedly entered the equestrian media centre [@SkySportsNewsHQ] pic.twitter.com/TAG5JNjlXI
— B/R Football (@brfootball) August 6, 2016
August 5 – Robbery at knifepoint on Ipanema beach against two rowing coaches, this was reported by the Australian Olympic Committee
Sarcasm on the Rio 2016 security is brought to social media, saying they are able to confiscate a bug spray —
Quite fitting that the only thing airport security in Rio confiscated from my bag as I left: bug spray #Rio2016 #Olympics #BackToTheUSA
— Ashok Moore (@AshokMoore) August 15, 2016
Other people reporting about security are as follows:
Blast heard at #rio2016 Cycle Road Race was controlled explosion of backpack by bomb squad – public security official tells Reuters
— Ossian Shine ?? (@ossianshine) August 6, 2016