UPDATE: AMBER Alert for 18-Month-boy from Olympia City - NBC Right Now/KNDO/KNDU Tri-Cities, Yakima, WA |

UPDATE: AMBER Alert for 18-Month-boy from Olympia City

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UPDATE: Mason Wilhelm has been located and suspect is in custody. 

THURSTON COUNTY, WA - Deputies in Thurston County believe that a 18-month-old boy may be in danger. Mason Wilhlem was last seen in Olympia City wearing a gray t-shirt with animals on the front and a black Northface jacket. Wilhlem is described as 2'7" weighing 28 lbs.

Authorities say Mason Wilhelm may be with Cassandra Wilhelm. She is 34-years-old 5'7" weighing 175 lbs. last seen wearing a grey Seahawks jersey. Cassandra Wilhelm is known to be schizophrenic and a known heroin user.

They may be traveling in a 2012 dark blue, Dodge Avenger with a Washington license plate of AIE8318.

Deputies say Cassandra Wilhelm violated a protection order for domestic violence when she assaulted her husband Bryan Wilhelm and then took their 18-month-old child ,who is also protected in the order, and she drove off.