A Maryland Transit Administration employee suffered severe injuries to his head, hands and chest Monday morning when cylinders of compressed gas exploded at a maintenance facility in Pikesville, the state fire marshal’s office said.

David Kotofski, 64, was flown to the University of Maryland Shock Trauma Center. He remained in critical condition Monday evening, the fire marshal said.

Kotofski was moving supplies from his personal vehicle to his work truck when the explosion happened about 8 a.m., officials said. The gas cylinders exploded in the trunk of his personal vehicle. The fire burned nine vehicles at the maintenance facility, 4380 Old Court Road.

About 30 people were evacuated from the facility. No one else was hurt.