A water leak at a Financial District hotel forced about 400 people to evacuate in the middle of the night Monday, an FDNY spokesman said.

The leak, which sprung from a fire sprinkler pipe on the roof of the Holiday Inn on Washington Street at about 4:15 a.m., flooded the upper floors and the elevator system, the spokesman said. The building has more than 50 floors.

Most of the guests were able to return to their rooms a few hours later.

A spokesman for InterContinental Hotels Group, which owns Holiday Inn, said the company is working to relocate guests who could not return to their rooms to nearby hotels.

"IHG, owner of the Holiday Inn brand, holds the safety, comfort and well-being of our guests as a top priority," the spokesman said in an email. "Many guests have been able to return to their rooms and the hotel team is working closely with its vendors to restore full operational functionality as soon as possible."