A woman is in police custody after attacking an attendant on a flight from New York's LaGuardia Airport to Chicago's O'Hare Airport, forcing the plane to divert to Detroit.

Matthew Goldgraben sat next to her on the plane. He tells 7 Action News that during a beverage call, the flight attendant spilled a drink and while they were cleaning it up, the woman attacked the attendant.

Other passengers jumped into action and restrained the woman on the floor until they landed at DTW.

United 3461 was taken to the North Terminal where the woman was taken off the plane. Officials say the woman may have suffered some kind of medical situation.

The flight was only delayed about an hour before eventually taking off toward Chicago.

The FBI is now investigating the incident.