A woman was killed and an infant was critically injured in a shooting Saturday night at an apartment in the 7700 block of Willow Chase Boulevard, according to Houston police. Police said the infant's father came to the apartment to deliver diapers and argued with the infant's 19-year-old mother. Police said he pulled out a gun and shot the mother's mother, about 40, in the back, then shot the baby in the abdomen.

Police said the 19-year-old carried the infant outside. She was not hurt. Officers responded around 7:35 p.m. and found the suspect dead from a self-inflicted gunshot wound, police said.

Officers performed CPR on the woman and applied a chest seal before Houston Fire Department crews took her and the infant to a hospital. The woman was pronounced dead at the hospital. As of early Sunday morning, police said the infant remained in critical condition. Police have not released the identities of the victims or the suspect.