Investigators are working to determine what led to a fatal explosion on the city's southeast side.
It happened near Stop 11 and Sherman Drive just after 11 p.m. Saturday. At least two people were killed and seven others were injured.
Coon said, "all indicators" point in the direction of a natural gas leak as the likely cause. Because the house where the explosion occurred was unoccupied all day, Coons said there would have been no one home to smell leaking gas.
"A huge build up," could likely have been touched off, said Coons.
More than 200 residents were evacuated from their homes. Some two dozen homes were damaged by the blast.
Investigators are tracking down reports of the smell of gas in the neighborhood throughout the day Saturday.
Some residents are being allowed back in on a limited basis to retrieve personal items. So far, 27 homes have been ruled uninhabitable.
Coons said once the area is secured, crews will begin determining how to manage the debris in the community.
Homeland Security: All indicators point to natural gas leak in southeast side explosion
Southeast side explosion (November 11, 2012)