WORTHINGTON, Armstrong County — A Beaver County man is in the Armstrong County Jail after he allegedly held his ex-girlfriend hostage at her Worthington residence Thursday and threatened her with a knife.

Keith L. Kammerdeiner of Aliquippa escaped the residence undetected by police, but was arrested at a Pittsburgh hospital where he had gone.

The woman told police that Kammerdeiner had sprayed her with Mace, bound her hands and legs, and held her hostage and sexually assaulted her at knifepoint since about 8 a.m.

The woman suffered cuts on her face and fingers during the ordeal, but managed to escape and call for help. She was taken to ACMH Hospital near Kittanning for treatment.