A Saturday morning crash in Joppa has snarled traffic along Interstate 95.
At just before noon, a crash was reported along northbound I-95.
All northbound lanes were temporarily closed, but one lane has since reopened. Injuries were reported in the crash.
The Joppa-Magnolia Volunteer Fire Company has units on the scene.
The Maryland Transportation Authority says there is now a 4-mile backup along northbound I-95.
Motorists should use an alternate route.