Accelerant has been discovered at the crowded multifamily Queens home where an inferno broke out over the weekend, killing three people, law enforcement sources said Monday morning.
The accelerant was detected by an FDNY canine during a search at the home on 48th Avenue near 90th Street, the sources said.
Recovered video captures a man entering the building before the fire, and walking out before the blaze erupted, according to the sources.
As a result, a search warrant was issued, the sources said.
Investigators are awaiting lab tests, according to a source close to the investigation.
“This investigation is still in the early stages and active,” an FDNY spokesman told The Post on Monday.