Brazilian police officer shot dead on Rio Olympics duty

A Brazilian policeman, who was working security at the Rio Olympics, has died after being shot in the head when he and two other officers got lost near a slum and came under fire.

Helio Vieira died late on Thursday after the truck he and his fellow officers were travelling in was sprayed with bullets which shattered the windows.

They had been using a GPS device to navigate unfamiliar streets on Wednesday afternoon when they took a wrong turn off a highway leading to Rio's international airport.

Justice Minister Alexandre de Moraes announced Mr Vieira's death on his official Facebook page. The other officers suffered minor injuries.

More than 85,000 security forces have been deployed in Rio for the Olympics, which is double the number of London in 2012.