Interstate 495 in Lowell, Massachusetts, came to a standstill on Tuesday after authorities closed both the northbound and southbound lanes because of a major police operation.
A silver pickup truck parked in the grassy median caused many police cars to stop, which in turn stopped traffic on both sides of the road.
Troopers from the Massachusetts State Police appeared to be engaged in a standoff with a suspect as they pointed their weapons at the truck. The pickup truck may or may not be occupied.
