A Philadelphia police officer with a history of stalking and harassing his former lovers fatally shot his ex-girlfriend and wounded her daughter on Monday, police said.

WCAU reported that Colwyn Borough Police Department identified 32-year-old Stephen Rozniakowski as the man who opened fire on both women in a Delaware County home. Neighbors identified the ex-girlfriend as Valerie Morrow.

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Morrow’s teenage daughter reportedly was also shot, but her injuries were not life threatening.

According to investigators, the victim had recently filed a protection order against Rozniakowski, but the two had not dated for years.

Rozniakowski called the Colwyn Borough Police Department just before the shooting to notify them that he was resigning, investigators noted. He had been served the protection from abuse (PFA) order that same evening.

Reports said that a second off-duty officer, who was thought to be Morrow’s husband, was also in the home when the shooting occurred, and he shot Rozniakowski.

The suspect was taken to Crozer-Chester Medical Center for treatment. His condition was not immediately available.

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The Delaware County Daily Times pointed out that Rozniakowski may have been wearing body armor when he was shot.

Rozniakowski was charged with 25 counts of stalking and 50 counts of harassment in a case earlier this year involving his former fiancee, who had also taken out a protection order against him. His service weapon was taken away at that time, and he was placed on administrative leave, the department said.

Rozniakowski was due in court on Thursday for a pre-trail conference on the 75 counts of stalking and harassment.

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Watch the video below from WCAU, broadcast Dec. 16, 2014.