By CBS3 Staff

BERLIN, N.J. (CBS) – Fire investigators are trying to pinpoint what sparked a four-alarm fire in Camden County, Wednesday morning. Chopper 3 was over the Johns Manville plant on North Grove Street in Berlin, where the call came in around 5:30 a.m.

4-Alarm Fire Damages Johns Manville Plant In Berlin

Johns Manville makes insulation and building materials.

There are no reports of injuries.