Four people have been charged after G20 police raided two homes in Toronto on Saturday morning.

There are also reports activists from Montreal were arrested later at a third house in Toronto, host of the summit of world leaders.

Amanda Hiscox, 36, Peter Hopperton, 24, Alex Hundert, 30, and Leah Henderson, 29, were each charged with conspiracy to commit mischief over $5,000 after search warrants were executed, confirmed the G20 Integrated Security Unit.

The unit includes members of the RCMP, Toronto police, Peel Regional Police and the Canadian Forces.

They could not confirm the addresses of the accused nor the time of the raids.

However, a news release issued by Niki Thorne, a G20 activist and a resident of one of the raided homes, said officers arrived at her residence around 4:45 a.m. ET and entered through the back door.

The activists allege officers dragged unclothed people from their beds, kicked people who were asleep on the floor, demanded identification and refused to show a warrant or badge, or let the people in the house call for legal advice.

They also said warrants have been issued for the arrest of other G20 protesters.

As of 1 p.m., they reported that a third house near Queen's Park had been raided and 13 to 15 activists from Montreal had been arrested.

A spokesperson with the Integrated Security Unit could not confirm a third raid.

Two other people were arrested Saturday in incidents separate from the raids.