Thirty one year old Gerardo Cruz-Hernandez is a fugitive, facing 70 counts of rape.
Police say his victim is a 15-year-old Norristown girl who became pregnant during the abuse, and who he then forced to undergo an abortion.
A teacher at the victim's school had noticed signs of abuse, so the school called police.
County Youth Services is caring for her for now.
Police were about to arrest Cruz-Hernandez, but say a woman close to him tipped him off, and he fled. That woman is now under arrest.
He is a Mexican national, and they believe he has already left Pennsylvania.
Anyone with information on Cruz-Hernandez' whereabouts is urged to contact police immediately.
Get more details from our sister station, 6ABC Action News in Philadelphia.