BRISTOL, Pa (CBS)
A former employee surrendered to police after a shooting at a Bucks County business that left two people dead Friday afternoon, CBS station KYW-TV in Philadelphia reports.

Police were called to Simon & Schuster on the 2200 block of Radcliffe Street after reports of gunfire at about 3:30 p.m. Authorities said a disgruntled former employee, identified as 32-year-old Robert Diamond, opened fire on workers during a shift change at the business.

The Bucks County District Attorney's office said Diamond, armed with a ..40 caliber weapon, opened fire on 46-year-old Angel Guadalupe of Levittown, who was driving in a white SUV at the time. As the vehicle stopped, Guadalupe fell to the pavement and Diamond approached him and "fired shots until he wasn't moving anymore."

Authorities said Diamond's attention was turned to a former co-worker, 52-year-old Reginald Woodson of Willingboro. Woodson was shot multiple times in the back while trying to flee the scene. He was airlifted to St. Mary's Hospital where he was later pronounced dead. Officials said Diamond had previously worked with Woodson, but did not know Guadalupe. A spokesperson for Simon & Schuster said Diamond was let go in April due to absenteeism. Diamond told authorities he was often harassed by his co-workers and just stopped going to work.

A spokesperson for Simon & Schuster released a statement in light of the deadly incident that read:
"Everyone at Simon & Schuster is deeply saddened by this terrible tragedy. Our thoughts and prayers go out to the families of the victims, and to all of our colleagues at our Bristol, Pennsylvania facility."

Simon & Schuster is a division of the CBS Corporation.

Workers with the night shift were sent home Friday and officials said grief counselors will be on hand. Diamond has been charged with two counts of first degree murder. He is expected to be arraigned.

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