911 Calls released of deadly Sun Prairie gas explosion

SUN PRAIRIE, Wis. (CBS 58) -- For the first time since the deadly explosion in Sun Prairie, we're hearing 911 calls from the scene to first responders.

911 Caller: "We're over by East Main Street by the building that blew up."

911 Operator: "A building blew up?"

911 Caller: "That's what it looked like, yeah."

Investigators are still trying to figure out which construction company hit the gas line that caused the explosion.

In another call, a man told a dispatcher he'd hit the gas line and said he could smell it.

Sun Prairie officials are still deciding whether or not charges will be filed.