Four people have been killed in an overnight shooting at a Northwest Dallas apartment complex. According to NBC 5 Dallas-Fort Worth, the shooting occurred late on Tuesday night and resulted in the deaths of two men and two women. Police were called to the complex after reports of gunfire and arrived to find the victims inside one of the apartments. The Dallas Morning News reports that the shooting is believed to be related to a dispute between two groups of people.

Police have not yet released any information about suspects or motives, but arrests have been made in connection with the shooting. According to WFAA.com, police have taken several people into custody and are questioning them about the incident. The investigation is ongoing, and police are urging anyone with information about the shooting to come forward.

Residents of the apartment complex say they are shaken by the incident and are calling for greater security measures in the area. “It’s just a terrible tragedy,” one resident told FOX 4 News Dallas-Fort Worth. “We need more police presence around here. It’s just not safe anymore.”

The shooting is the latest in a string of violent incidents in Dallas in recent weeks. Just last week, a man was found shot to death in his vehicle in the same area. Police say they are increasing patrols in the area and working to address the underlying issues that are contributing to the rise in gun violence.