A Nesquehoning man who is serving a long stretch in state prison for armed robberies in York County has admitted to the armed robbery of a Redner's Warehouse Market clerk in January.

Keith Michael Pierce, 48, who last lived at 135 W. Ridge St., appeared before in Carbon County Court Judge Joseph Matika on Thursday. Pierce, who was shacked and handcuffed, showed little expression as he admitted to threatening the Redner's clerk with a knife at 6:06 p.m. Jan. 31, robbing her till of $380.

Matika deferred sentencing pending a pre-sentence investigation.

"I want to know more about Mr. Pierce," he said.

Pierce also admitted to taking money for a roof repair job, but never doing the work.

Pierce is already doing 3-and-a-half to seven years in state prison for robbing a Hess Express and a Rite Aid drugstore in York county in March.

According to court records, Pierce was caught on video as he held the clerk at knifepoint, then reached into the cash register to grab the money. He fled, dropping the cash, and stopping to pick up the bills. he left a $5 bill behind.

Pierce was identified by a Redner's representative, who had seen him in the store several times. Police later recovered the knife at Pierce's home.