An Oklahoma man is facing charges, including first-degree murder, after police said he assaulted his pregnant girlfriend and caused her to miscarry.

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Tulsa police told FOX23 they received a call about a suicidal man around 5 p.m. Monday. Officers responded to the apartment to find a pregnant woman on the floor as her mother performed CPR.

Police said they believe there was a domestic argument between the woman and her boyfriend, Colby Wilson.

Paramedics took the victim to the hospital, where she is in critical condition. Police reports said the woman had a brain bleed, fractures to her face, collapsed lungs and multiple cuts.

Detectives said they were told the unborn baby no longer has a heartbeat.

Officers arrested Wilson, who is now facing charges for first-degree murder in the death of the unborn baby, as well as aggravated assault and battery.