A Chicago police officer was arrested and charged with the murder of the mother of his child after she was found shot in her home.

Pierre Tyler, 29, was charged with first-degree murder on Saturday for the killing of Andris B. Wofford, 29. The pair have a 9-month-old child together and were previously in a romantic relationship, prosecutors said.

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Police responded to Wofford's residence on Thursday to perform a wellness check, where they found Wofford inside with a fatal gunshot wound to the head, according to ABC 7.

Tyler had a second child with another woman, which caused an argument between the two, according to prosecutors. On Wednesday, Tyler was seen on security footage walking into Wofford's residence. Neighbors told investigators that they heard the two arguing in the house between 8:30 p.m. and 9 p.m, after which they said the arguing stopped.

More surveillance footage allegedly shows Tyler leaving the residence just after 9 p.m. with a gun holstered at his side. No one else was seen to enter or exit the residence for the rest of the night.

Wofford's father, who was watching her young child at the time, received a text at 9:11 p.m. from Wofford's phone saying she would be coming over soon, but she never arrived.

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Tyler told investigators that he left the residence at 9 p.m. and then met with a confidential informant. Tyler's partner said that he did not accompany him to the meeting and that it would be strange for him to meet with an informant on his own.

Tyler joined the Chicago Police Department as a tactical officer in 2016. He was ordered to jail without bail until his next hearing on Dec. 21.