One killed in midair helicopter crash

Debris from a helicopter on the ground after a midair collision(WPVI-TV/6ABC/AP)

One person has been killed and another is critically injured after two helicopters collided in the air in New Jersey.

Hammonton police chief Kevin Friel said rescuers responded to a report of an aviation crash at about 11.25am local time on Sunday, and police and fire crews subsequently extinguished flames that engulfed one of the helicopters.