Firefighters are investigating a series of suspected arson fires in Turley.

Firefighters say there might be an arsonist on the loose after a series of house fires in Turley.

Turley firefighters responded to a vacant house fire around 9 a.m. Sunday near 63rd Street North and Peoria.

This fire comes about a month after firefighters say they responded to another house fire across the street. Firefighters believe the fires were intentional.

"We're trying to find out who is doing this," said Chief Nelson Sager, with Turley Fire. "We've got an arsonist running loose somewhere."

Firefighters say this investigation is ongoing.