Baltimore Gas & Electric Co. (BGE) had cut off natural gas service to a portion of a northwest neighborhood to investigate a line that exploded Monday, killing two people and injuring seven others.

BGE, a subsidiary of Exelon Corp., said crews had found no leaks and continued to inspect area gas mains and services in the wake of the blast Monday morning on Labyrinth Road, about 10 miles from downtown Baltimore. The utility planned to make repairs if issues were found.

The cause of the explosion is currently unknown, and the company is working with the fire department to investigate. BGE, which offered its prayers, said, “Public safety is our first priority. This remains an active emergency recovery effort led by the Fire Department.”

Management said it was...