State and local fire officials are working to find what they believe is a serial arsonist in Meridian.

Meridian Firefighters were called to a fourth fire over the weekend, all of which they believe were intentionally set.

Meridian Deputy Fire Chief Jason Collier told WTOK-TV investigators believe all four fires were set intentionally and that all occurred in roughly the same area of the city.

The structures set ablaze were all abandoned properties, investigators reported.