State police at Frackville are investigating a theft incident in Schuylkill County.

Troopers said Patricia Ann Galezniak, 60, of Ringtown, parked her 2004 Chevrolet Sliverado 2500 truck at the Joe Zerbe Airport parking lot in Foster Township, on Saturday, March 3. Unknown criminals removed the catalytic converter from the truck. The theft occurred sometime between 4:45 a.m. and 5:30 p.m., troopers said.