Officials are working Sunday to restore one last building still without power in Co-op City, but were able to turn it back on for the other seven.

The outage was caused by a blown transformer Friday. It lasted through Saturday.

Sources tell News 12 that workers had found a temporary fix to get power back on Saturday morning, but expected it to last longer than it did - which was only a little more than 24 hours.

Officials went building to building Sunday morning to try to bring them back online with generators. Meetings have also been ongoing between board members, the owner and engineers to try to figure out what exactly happened.

An independent contractor will also be investigating.

State Sen. Jamaal Bailey says he's been working with Riverbay Corporation, which manages Co-op City, all weekend.

A 73-year-old woman was also found dead in one of the buildings on Friday. Police say Ada Longmore had an oxygen tank and was found between the 18th and 19th floors of the stairwell after falling.

A source tells News 12 Longmore lived on the 17th floor and was going to visit a relative. Officials have not confirmed if the death was related to the power outage.

Many seniors were stuck without access to an elevator in the high rises.