BINGHAMTON, N.Y. -- Officials said 14 people, including the suspected gunman, were killed in a shooting rampage at an immigrant services center in Binghamton Friday.

Binghamton Police Chief Joseph Zikuski said 14 people were killed and four were injured during the shooting at the American Civic Association.

The gunman apparently blocked the back door with his car, then entered the building through the front while firing. Police said a receptionist was among the first to be shot. She pretended to be dead, then crawled under a desk and called 911.

Chief Zikuski said, "At 10:31 this morning, there was 911 call to the emergency services center, a woman saying she'd been shot, there was a man with a handgun firing several more shots and that there were hostages. The police response was less than two minutes."

Rep. Maurice Hinchey said the gunman opened fire on a citizenship class.

The chief said 26 people hid in the boiler room during the rampage. Thirty-seven people were safely removed from the building, while four others were hospitalized.

Officials believe the gunman died from a self-inflicted gunshot wound.