BEDFORD, Mass. >> All seven people aboard a private plane that crashed in a Massachusetts air field and erupted into a fireball have been killed, authorities said.

“There were no survivors,” said Matthew Brelis, a spokesman for the Massachusetts Port Authority, which operates Hanscom Field in Bedford, where the Gulfstream IV crashed as it was leaving about 9:40 p.m. for Atlantic City International Airport in New Jersey.

“Our thoughts and prayers are with the people on board and their loved ones,” Brelis said before a news conference announcing the deaths.

The names of the victims were not immediately released. And authorities did not say what they think caused the crash. They said the National Transportation Safety Board will investigate and determine what happened.

Nearby residents recounted seeing a fireball and feeling the blast of the explosion shake their homes.

Jeff Patterson told The Boston Globe he saw a fireball about 60 feet in the air and suspected the worst for those aboard the plane.

“I heard a big boom, and I thought at the time that someone was trying to break into my house because it shook it,” said Patterson’s son, 14-year-old Jared Patterson. “I thought someone was like banging on the door trying to get in.”

The air field, which serves the public, was closed after the crash. Brelis said responders were still on the scene early Sunday morning.

Hanscom Field is about 20 miles northwest of Boston, and acts as a corporate reliever for Boston Logan International Airport.