A man suspected of killing his ex-wife and kidnapping her five-year-old son is in custody.

Oklahoma City Police arrested Chase Ainsworth Saturday evening after neighbors made a startling discovery in a metro home.

"At about 2:50 this afternoon, we had some neighbors go over to the house to check on a playmate and discovered that the mother was killed," said Michelle Henderson, Oklahoma City Police Department.

Police surrounded the home near May and 104th and said the victim later died at a hospital.

An Endangered Missing Advisory was issued for her five-year-old son, who was gone.

The alert claimed that Chase took the boy from his mother's home and said he was possibly armed with a knife and was considered dangerous.

A nearly five-hour search ended after the boy was safely recovered near SW 119th and Rockwell.

"Our main goal after discovering what had happened was finding [the child] safely, which is what we did," Henderson said.

Police suspect that 34-year-old Chase Ainsworth killed his ex-wife and then took their son.

Neighbors said it's an awful tragedy in a tight-knit community.

Related Story: Woman Filed Protective Order Against Ex-Husband Accused Of Killing Her In Oklahoma City, Records Show

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An Endangered Missing Advisory has been activated for a five-year-old boy authorities say was taken by a homicide suspect on Saturday.

Oklahoma City Police confirmed a woman was killed and they're searching for a boy who's gone missing.

OCPD says the child is possibly in a Black 2012 Kia Soul with Oklahoma tag FPA580. He is 3-foot-10 inches tall with brown eyes.

They say he could be with suspect Chase Ainsworth, a 34-year-old man who was last seen in a tank top near 10000 S. Land Ave.

OCPD says Ainsworth is the suspect in a homicide investigation involving his wife in SW Oklahoma City. The woman died at the hospital, OCPD says.

"At about 2:50 this afternoon, we had some neighbors go over to the house to check on a playmate and discovered that the mother was killed," said Michelle Henderson with the Oklahoma City Police Department

Authorities Chase Ainsworth may be armed with a knife and is considered dangerous.

Call 911 if you see him or the child.

OHP activated the alert on behalf of the Oklahoma City Police Department.

This is a developing story. Refresh this page for updates.