HazMat teams were making their way to a serious crash in Joppa on Thursday morning.

At about 10 a.m., emergency personnel responded to a crash at Mountain Road (MD-152) at Old Mountain Road.

A truck carrying pool chlorine was involved in the crash and three people were seriously injured.

Several emergency units are now on the scene, including crews from the Joppa-Magnolia Volunteer Fire Company.

Motorists should avoid the area and expect major delays.