The FBI is offering a reward of up to $20,000 for information leading to the recovery of two weapons stolen overnight from an FBI SWAT team emergency response vehicle parked in Andover.

The FBI said Thursday the stolen government weapons are a Colt M16-A1 rifle and an HS Precision Pro-Series 2000 sniper rifle.

The FBI said items also were stolen from other vehicles parked at nearby homes in Andover during the same time period, Wednesday evening to early Thursday morning.

The FBI said it is working with Andover police and members of the Violent Crimes Task Force, which includes State Police and police from Somerville, Malden, Saugus, Cambridge and Boston