Rescuers searching the rubble of a collapsed roof at a shopping centre in Canada have found signs of two people - one of whom may be alive.
Ontario Provincial Police investigator Percy Jollymore said the victims had been trapped under the rubble since the collapse on Saturday.
He said: "We have obtained some visual information relating to a visual of a hand and a foot which is our ground for the suspected casualty in this case.
"We cannot confirm the identity, we cannot confirm anything about that."
Mr Jollymore said the collapsed structure was still too unstable for the rescue team to reach the critical zone.
The other victim was identified by a tapping sound.
"Some of our search members this morning heard a couple of taps. They called for a quick silence on the site and there was a couple more taps," said a rescue spokesperson.
"That was an indication to us that we were dealing with a rescue."
Since the partial collapse of the parking structure roof at the Algo Centre Mall in Elliot Lake, 22 victims have been treated for injuries, mostly superficial.
The police have no news of at least nine people on a list they have drawn up of persons who may have been at the mall during the collapse.
A team of specialists with sniffer dogs is at the scene.
Dalton McGuinty, the premier of Ontario, Canada's most populous province, offered his thoughts and prayers to the victims and their families.
The shopping complex, which was built in the 1980s, housed a grocery store, restaurants and other shops.
Water leakages had been reported in recent months.
