Constables say a father is in custody after he allegedly held his 4-year-old son hostage inside an apartment.

Around 2:30 pm Sunday, Precinct 4 constables said they received a call that a father was threatening to harm himself and his 4-year-old child inside an apartment on Ella Boulevard near South Rankin Road in northwest Harris County.

When police arrived, investigators said the father refused to come out. As a result, Harris County swat teams were called to the scene.

Officials said the swat team was able to make entry into the home around 7:00 pm. According to investigators, they had to use a taser on the father to subdue him.

Constables said he's since been taken into custody. His son was unharmed and later returned to his mother, investigators said.

The father now faces charges of child endangerment.