The fiery basement explosion that rocked a Brooklyn home on Monday, sending thick plumes of smoke into the air and three people to the hospital, was caused by some yahoo using gasoline to strip paint, FDNY sources said Tuesday.

The blast went off just before 1:30 p.m. in the basement of a two-story home on Friel Place in Prospect Park South and caused major structural damage to the building.

Photos from the scene show gray smoke engulfing the entire building while firefighters work to put out flames on the first floor.

FDNY sources said the cause of the blast was “improper use of gasoline,” which someone was using to strip paint off tiles. It was unclear if anyone would be criminally charged for the incident.

The Department of Buildings on Monday determined the home was no longer structurally sound and ordered the building demolished, a DOB spokeswoman said.

According to neighbors, the homeowners were out of town and the building was under renovation.