An extra 3,000 soldiers have been drafted into the giant security operation for the Rio 2016 Olympic Games, defence minister Raul Jungmann announced in Rio de Janeiro on Wednesday (6 July).

The new troops will protect key transport infrastructure such as the international airport, train stations and major roads. As well as being on patrol in some of the city's most visible locations, they will also work on anti-terror operations and on security details for VIPs.

With the latest deployment, the total number of armed forces personnel who will be in Rio de Janeiro in the month of August has risen from 18,000 to more than 21,000.

"If necessary, we will mobilise even more," said Jungmann.

According to the Brazilian Ministry of Defence, 6,000 soldiers are already operating in the city. Twelve naval vessels, 28 army helicopters and 70 armoured vehicles will help ensure safe Olympic Games.

Another 20,000 soldiers will be on duty in the five cities that will co-host the Rio 2016 Olympic football tournament: Belo Horizonte, Brasília, Manaus, Salvador and São Paulo.

A total of 88,000 security personnel, comprising 47,000 police and 41,000 Armed Forces personnel, will be on duty during the Games.

On Tuesday, the Força Nacional, which combines various different Brazilian public security forces, officially assumed control of security at the venues for the Rio 2016 Games in a ceremony at Barra Olympic Park.

Project trains public workers and population to identify suspicious behaviour