Pittsburgh police used a photo on Facebook to tie a third person to a brawl at PNC Park in May that nearly cost a security supervisor his middle finger.
Detectives spotted Nicholas Miller, 23, whose last listed address was in the Westmoreland County borough of Youngwood, when a burglary detective stumbled upon a photo of him and one of the other suspects -- Rachel George, 22, of Greensburg -- on Facebook, police said.
Officers arrested Ms. George and her father, Christopher George, 50, also of Greensburg, on May 12, shortly after they said the pair tangled with Pirates security supervisor Joseph Risher and a Pittsburgh police sergeant during a home game against the Houston Astros.
One of Mr. Risher's fingers became entangled in a fence and tore almost entirely off at the knuckle during the melee.
Officers noted in an affidavit that a third man -- identified then only as Ms. George's boyfriend -- lunged at Mr. Risher and fled before the Georges became involved in the fray.
Pittsburgh police found Mr. Miller when he was arrested by another department on a parole violation stemming from a DUI case in Westmoreland County.
Mr. Miller faces one count of simple assault in the PNC Park case. A preliminary hearing originally scheduled for Thursday was postponed until Aug. 9 so Mr. Miller could hire a private attorney, police said.
The Georges are scheduled to appear in Allegheny County Common Pleas Court for formal arraignment Aug. 23. They face charges of assault, conspiracy and public drunkenness, some of which their attorney tried unsuccessfully to have withdrawn at a preliminary hearing last week.