Amber Alert Issued For Mother Sabrina Walls, Children Marcus & Demarcus Thomas

AURORA, Colo. (CBS4) -- Aurora police are looking for 3-year-old Demarcus Thomas and 5-year-old Marcus Thomas, who may be with their mother Sabrina Wells. Police believe they may be victims of foul play.

Police say they are believed to be traveling in Sabrina's 2006 black Ford Fusion with Colorado license plate CES-661.

The mother "has not been seen or heard from since Monday, which is completely out of character for her," Aurora PD Agent Faith Goodrich told CBS4.

Police said Walls is a survivor of domestic violence and her family is worried about her.

Multiple investigators have been on the case since 6 p.m. Wednesday, Goodrich added, and they grew more concerned as information continued to roll in.

The trio may have gone - or been taken - westward toward Las Vegas, Goodrich said.

If you see them, or the car, call 911.