A man is dead, trapped inside his burning home, and investigators are now trying to find the cause of the killer fire.

It happened around 2:40 a.m. Sunday in the 8100 block of Melbury Forest Dr.

That's in northeast Bexar county just across the city boundary.

City of San Antonio fire crews also responded to the fire.

When firefighters arrived they found the man dead inside his bedroom.

The victim was pronounced dead at the scene due to smoke inhalation.

The cause of the fire is still under investigation by Bexar Co. fire officials.