Five Brazilian policemen have been arrested on suspicion of altering a crime scene, after a teenager was killed during a shootout in Rio de Janeiro.
The arrests follow the release of mobile phone footage showing officers turning over the victim's body.
They then place a gun in his hand and fire it.
The officers said the gun accidentally fired while they were unloading it, but a police investigator in Rio, Ginito Lages, said the evidence was clear.
