A fugitive wanted for two 2010 rapes - including one just across the street from Philadelphia police headquarters - has finally been returned to Philadelphia to face criminal charges, the FBI announced this morning.

Alberto Issac Navarrete Suarez, 37, was wanted for raping, beating and choking a 22-year-old woman on Aug. 29, 2010, as she waited at a bus stop outside police headquarters at Eighth and Race streets. He also was wanted in the March 21, 2010, kidnapping, rape and robbery of a teenage girl in Allegheny County.

Philadelphia police had identified Suarez, a Mexican national, as the suspected attacker within a week of the bus-stop assault, but they couldn't locate him. Immigration officials placed him on a watch list, and FBI agents and Mexican authorities found Suarez, who also goes by the name Dario Gomez Lopez, in Mexico in April 2012. He was arrested and has remained jailed since then in Mexico City, awaiting extradition. Members of the FBI Philadelphia's Violent Crimes Fugitive Task Force brought him back to Philly last night.

Suarez was known as the "Pantless Rapist," because he fled the bus-stop scene without his pants when he heard the approaching sirens of police summoned by a witness who called 9-1-1. Area surveillance cameras captured his flight: In the clearest video, a man sprints away barefoot, in white fitted boxer-briefs and a black shirt with white sleeves, heading toward 10th and Spring streets.

Philadelphia police Commissioner Charles Ramsey and FBI Agent in Charge Edward Hanko are expected to announce further details on the case at a news conference at police headquarters later this morning.