One person is in custody after six people, including five young children, were shot to death at a home in Oklahoma.

Police officers responded to a call about multiple people shot at a home in Muskogee around 1:30 a.m. Tuesday.

The city has a population of just under 40,000 people and is about 45 miles southeast of Tulsa.

Officers found one man and four children dead, and a fifth child died at a Tulsa hospital.

Police say one person who was at the home with a gun is in custody.

A woman was also taken to a hospital with life-threatening injuries.

A police spokeswoman says authorities don’t believe the attack was random, but investigators don’t yet have a motive.