Thousands of police and military personnel will be drafted into Rio de Janeiro ahead of Prince William's visit. 

There are fears 'violence could erupt' after at least 132 people were killed during Rio police's deadliest ever operation against criminal gangs.

The Prince of Wales, 43, is travelling to the capital next week to present his environmental Earthshot prize, an award that hands £1million out for environmental innovations.

But after the 'unprecedented bloodshed' - which saw 2,500 police and soldiers on Tuesday storming the favelas of Penha and Complexo de Alemao - security is being beefed up.

A source told the Daily Mirror: 'After the unprecedented bloodshed during fierce intergang fighting, the government has drafted in thousands more officers and the military. 

'All eyes will be on Rio while William is there, and there is genuine concern that violence will erupt again while he is in Brazil.'

Felipe Curi, Rio state police secretary, told a news conference that bodies of additional suspects were found in a wooded area where he said they had worn camouflage while battling with security forces. 

He said local residents had removed clothing and equipment from the bodies, in what would be investigated as evidence tampering.

'These individuals were in the woods, equipped with camouflage clothing, vests and weapons. Now many of them appeared wearing underwear or shorts, with no equipment, as if they had come through a portal and changed clothes,' Curi said.

Earlier on Wednesday, in the neighborhood of Penha, residents had surrounded many of the bodies - collected in trucks and displayed in a main square - and shouted 'massacre' and 'justice' before forensic authorities arrived to retrieve the remains.

'They can take them to jail, why kill them like this? Lots of them were alive and calling for help,' resident Elisangela Silva Santos, 50, said during the gathering in Penha. 'Yes they're traffickers, but they're human.'