PHOENIX (AP) — Two young children were near their mother Tuesday when she was shot dead in the parking lot of a Phoenix apartment complex, police said.

The 35-year-old woman was shot at close range with the children present and the children were unharmed, said Sgt. Vince Lewis, a Phoenix police spokesman.

No arrest had been made and police did not release a suspect description or the identity of the victim.

The Arizona Republic (https://goo.gl/ABzT30 ) reported that several apartment complex residents said they heard a quarrel and loud banging around 5:30 a.m. but went back to bed when they could not see anything from their apartment window.

Lewis said the woman was shot multiple times shortly before 6 a.m.

The children were in the custody of officials until authorities find an adult relative, Lewis said.

Lewis said there was no indication that the shooting was related to a series of 2016 shootings believed to be the work of a serial killer who shot victims outside after dark who were in their cars and in front of houses.

Seven people were killed and two others wounded in two predominantly Latino neighborhoods located about 10 miles apart.