UPDATE 10/5/19 11:05 AM — The coroner has identified the person who died as Shanna Carlson, age 34.

The cause of death is still under investigation.

UPDATE 10/4/19 6:05 PM – According to District Attorney Bill Shaw, one body was discovered inside the house and the coroner is on scene.

Police had originally reported all four occupants were accounted for; however, surveillance footage obtained by police led them to believe one woman was still inside.

Shaw confirmed crews were called to an explosion around 9:45 a.m.

Shaw said natural gas to the apartment was shut off in July.

The fire is still under investigation.

CLEARFIELD, Pa. (WTAJ) — Crews have responded to a building fire at 331 Market Street in Clearfield. Multiple witnesses say they heard an explosion at the time.

Philipsburg Fire Department responded to the call at 10 a.m. and are on scene.

Crews have things under control and are starting to finish up so the State Police can come in to investigate.

Officials have not stated how many were in the building or if anyone was injured and have not commented on the cause.

We have a reporter on the scene and we’ll continue to update the story as information becomes available.

Drone Video: Damon Charles