A 71-year-old woman was shot in the foot while in her apartment in the 1100 block of Horizon Drive in Killeen just before 3 a.m. Monday.

Four people were involved in a dispute outside her apartment complex. When their argument escalated, a single shot from a handgun went through her door and struck her, police said.

Before officers arrived, the group at the center of the shooting barricaded themselves inside a nearby apartment. The SWAT team was activated, and officers evacuated apartments, while advising other residents to shelter in place.

Just before 6 a.m., negotiators convinced the group to come outside. Police said there were three women and one man -- along with a five-month-old child. One of the women was arrested for outstanding misdemeanor warrants. The other adults were questioned and released, police said.

The 71-year-old victim was taken to Metroplex Hospital, but her injuries were not life-threatening. Horizon Drive was temporarily closed, but it has since reopened to traffic.

Detectives are still investigating the shooting. They have asked anyone with information about the shooting to call Crime Stoppers at 254-526-8477 or submit a tip online by clicking here. Tipsters may also text BELLCO along with their tip to 274637. All information is anonymous. And, if your tip leads to an arrest, you could be paid a cash reward of up to $1,000.