Search crews working feverishly to dismantle a partially collapsed shopping mall in Elliot Lake, Ont., this morning have emerged from the debris carrying a body on a stretcher, four days after the tragedy left residents maintaining a round-the-clock vigil.

"We have one [body] at this point — we're back in there and we're going to continue to work in the area until we come to the conclusion there are no more individuals in there," Dan Hefkey, chief and assistant deputy minister at Emergency Management Ontario, confirmed to reporters just after 9:30 a.m. ET.

The identity of the person removed from the debris hasn't been confirmed. Hefkey said there's still hope they will find any survivors.

"As you can imagine for people here who have been waiting for news, this has been really hard to take," CBC's Natalie Kalata said from the scene.

Earlier, she reported, "We know there were two people trapped in the rubble — we have only heard reports and seen evidence of one person being removed."

Search resumed after outcry

Before the intense overnight mall-dismantling efforts began, at least one person had been confirmed dead after the roof-top parking lot of the mall caved in Saturday afternoon, sending metal and concrete debris crashing through two floors of the building in Elliot Lake, 150 kilometres west of Sudbury.

Another 12 people had remained unaccounted for, down from the 30 officials earlier estimated were missing.

Hefkey had said early Wednesday morning that using the robotic arm on equipment from a Toronto construction firm, crews were able to move a massive section of an escalator and stairs that had prevented rescue workers from entering the mall.

The search for any survivors resumed late Tuesday after it had been halted Monday when it was believed there was a danger to people involved in rescue efforts, and there was public outcry and pressure from Ontario Premier Dalton McGuinty to resume the mission.