Philadelphia police responded to a home invasion early Monday morning after the blind victim’s seeing-eye dog called them for help.

According to police, a woman said a suspect broke into her home on the 4100 block of Edgely Road at approximately 4 a.m. Monday morning. The 52-year-old blind victim said she was threatened before being choked and falling down a flight of stairs.

Officers said that after witnessing the assault, the woman’s seeing-eye dog fought off the attacker. She told them that once the home was secure, the dog used a specially manufactured device to phone police and alert them.

The woman is being treated at the Hospital of the University of Pennsylvania, and is in stable condition. The suspect remains on the loose.