A Long Island residential neighborhood was rudely awakened by a house explosion early Tuesday morning.

The blast happened just after 1:30 a.m. at a home located at 150 Lincoln Street in the Hempstead. The home was leveled to a pile of rubble; the roof thrown right into the street.

No one was home at the time, say firefighters, and the homeowner was already hospitalized for an unrelated condition.

Next door neighbors at 146 Lincoln Street say they were awakened by a loud sound just before 2 a.m.

They gathered everyone together, with resident Percy Rock yelling, "Get out, get out, get out!"

Police say seven people were evacuated from that home, including three children. They also say three people, including one child, were evacuated from neighboring 154 Lincoln Street.

Both of those homes were partially damaged by the explosion and displaced residents were being assisted by the American Red Cross on Long Island.

First responders from Valley Stream, Elmont and Malvern all responded to the scene. One firefighter suffered minor injuries.

Elmont Fire Chief Mike Caopziello says the Nassau County Fire Marshall's Office, the Nassau County Police Arson and Bomb Squad, and the Town of Hempstead Buildings Department are all investigating the explosion on Lincoln Street.

They say they were uncertain whether the blast was caused by gas, but said that Keyspan was on the scene to help investigate.