Antioch Police arrested a mother after finding her four neglected children, leading to HAZMAT declaring the home uninhabitable.

A mom in Antioch was arrested Thursday after authorities say they discovered four young children alone in what was determined to be an "uninhabitable" home.

Police in Antioch on Friday confirmed the arrest of a woman who allegedly left her four young children unattended at a home that a Contra Costa Fire hazmat crew determined to be uninhabitable, authorities said.

A mother was arrested and her four children placed into the hands of Child and Family Services on Thursday after a passer-by saw a 2-year-old alone outside, police said. Police were at the house in the 2000 block of Spruce Way when the children’s 36-year-old mother arrived home.