HANSCOM AIR FORCE BASE, Mass. (AP) _ Portions of Hanscom Air Force Base in Massachusetts have been evacuated due to security concerns about a moving truck.

In a message on the base website, security forces said they became concerned Thursday morning during a routine vehicle inspection at a gate.

State police said the screening found indicators of potentially hazardous material. The truck is owned by Big Foot Moving & Storage. A woman who answered the phone at the company's Acton headquarters said ``we don't know what's going on'' and declined further comment.

The base put a response team in place, closed the gate and evacuated several nearby base facilities.

No injuries have been reported.

State police said they closed the exit from Route 2A to the base, about 20 miles from Boston.

Hanscom Field, a commercial airport adjacent to the base, remained operational.

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