Gas explosions kills 17 children in minivan

At least 17 children died Saturday when a gas canister used to fuel a minivan exploded in the Pakistani city of Gujrat, police said.

"It's over 100 degrees (38 degrees C), the heat probably caused the explosion," said Nadeem Ulla, a local police official. "We do not expect any foul play ".

Compressed natural gas is used as an alternative fuel to gasoline because the engines are more energy efficient and cheaper to run