A dog was seen sitting among the wreckage of a Pacoima house fire which left a man in critical condition Thursday morning. Authorities said it's believed to have been caused by fireworks and an explosion.

A home appeared to have partially collapsed after an explosion was reported at the Pacoima home, officials said. At least one person was injured.

Firefighters with the Los Angeles Fire Department are responding to reports of a possible explosion at a home in Pacoima on Thursday.