WICHITA, Kan. (AP) — Wichita police say a young couple was shot to death in their apartment and the twin brother of one of the victims is in custody.

Homicide Lt. Todd Ojile says 24-year-old Manuel Alvarado-Meraz and his 22-year-old wife, whose name has not been released, were found dead Wednesday night.

A police report says a relative found the couple dead. The suspect lived with the victims.

Ojile says neighbors reported hearing several gunshots about 7 p.m. Wednesday but no one called 911.

Investigators have not determined a motive for the shooting. Ojile says family members don’t know what caused the shooting.