Hundreds of patients, including dozens of prisoners, were evacuated tody from Bellevue Hospital due to a power outage suffered during this week's massive storm, and the head of New York City's Health and Hospitals Corporation told the Associated Press it may take more than two weeks to reopen the hospital.

Sources tell NY1 the roughly 350 patients are being transferred to other hospitals around town and that the process could take days.

Sources say patients have had to take stairs and that the facility's restrooms have not been working.

The outage also left many of the hospital's hallways and rooms in the dark and knocked out key medical equipment. The hospital also has no working elevators.

The affected patients also include 42 prisoners in the psychiatric unit and 18 prisoners in the medical unit.

The mayor's office said the inmates from Rikers Island were transferred to a "clinically appropriate and secure facility."

The hospital, located on First Avenue, has been operating on generator power since Monday night.

Officials say workers have been pumping roughly seven million gallons of water out of the basement.

The flooded basement contains fuel pumps which would have helped power the hospital's back-up generators.