State police at Schuylkill Haven are investigating the theft of diesel fuel from a mining site in Schuylkill County.

Troopers said the incident occurred near a clearing adjacent to Jeff's Swamp Road, a mile west of the intersection with Lincoln Road, in Tremont Township.

An excavator at the site was recently filled with diesel fuel, 80 gallons. Unknown criminals arrived at the site and broke the lock on the fuel filler neck and siphoned diesel fuel from the vehicle. The victim of the theft is B&B Coal Co., of Joliett, Schuylkill County.

The theft occurred sometime between Nov. 13-14.