SALEM - An accident Monday morning shut down a stretch of Interstate 93 South, between Exits 1 and 2, for about two hours and made a parking lot of the area near Exit 3, according to highway officials.

Police officials rerouted traffic at Exit 2, according to a spokesman from the state Traffic Management Center.

The crash was reported at 5:48 a.m. and both state and Salem police responded to the scene, quickly detouring motorists around the crash site. The highway was reopened about two hours later but traffic was still moving slowly.

The area near Exit 3 South about 6:30 a.m. had become somewhat of a parking lot because of the commuter traffic backup and because of a second accident, the spokesman said.

Commuters were urged to find alternate routes.