An Arlington man likely caused the explosion that killed him and leveled his house during a standoff with police in December, authorities have concluded.
James Yoo, 56, appears to have poured gasoline throughout the basement where the blast — which engulfed the house in a fireball, hurled debris for three blocks and could be heard and felt for miles around — originated. Investigators concluded that Yoo himself likely sparked the blast by striking an ignition source such as a match, lighter, flare or gun.
