Police have confirmed that a bus transporting journalists at the Olympic Games was pelted by stones rather than hit by bullets on Tuesday.
Two people suffered minor injuries when windows of the bus were shattered as it travelled towards the Barra Olympic Park from Deodoro.
It was reported that the damage had either been done by bullets or rocks and Rio 2016 organisers stated on Wednesday that it was the latter.
A statement from Rio's civil police said: "According to information from the 42nd police precinct in Recreio dos Bandeirantes it was established that police procedures and investigations are underway to determine the damage suffered by a bus that provides services for the Games Rio 2016.
"The driver reported yesterday at the police station when he was traveling the expressway Transolimpica at the time of Curicica neighbourhood, the vehicle was hit by stones."
On Saturday a bullet landed at the feet of photographers at Rio's equestrian venue, with security forces concluding that the missile was fired at a police blimp from a local community.
A controlled explosion was also carried out on a suspect package on Saturday, close to the finish line of the men's cycling road race.