A propane truck exploded Friday on a highway, sparking a massive fireball and sending the tanker crashing into a house 125 yards away, officials said.

Six people died, four people were critically burned, and eight others were taken to hospitals."I heard the explosion and saw the tanker flying through the air. It fell on the house and just blew up," said Marvin Mitchell, a resident.

The house was destroyed and two children inside died, authorities said.

The four other deaths, including the driver of the truck, and most of the injuries occurred on Interstate 240 near downtown as the fireball engulfed the truck and several other vehicles, said fire Capt. Benny McDow.