UPDATED: 3/31/2016, 9:45 PM

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McKINNEY (CBSDFW.COM) –  A Frisco mother missing since Monday was found dead in her SUV Thursday in a McKinney shopping center parking lot. Her three children were also found — alive beside her. They were discovered in a Target parking lot in the 8900 block of S.H. 121.

Christine woo

Her three kids — ages 5, 3 and 1 — were taken to Children’s Medical Center in Plano where they were reportedly doing okay. Police said it was believed they were in the car several days after she died.

The mother and children were last seen Monday.  Frisco Police released video earlier Thursday of Woo and her children entering a Walgreens Monday.

woo children

Earlier Thursday, Christine Woo’s husband, Brandon Woo talked about his missing family.

Brandon Woo (Gabriel Roxas - CBS11)

Brandon Woo (Gabriel Roxas – CBS11)

The cause of death will be determined by the Collin County Medical Examiner.

Sources tell CBS 11 there were no signs of trauma to Christine Woo’s body.

The Frisco Police Department was leading this investigation with the assistance of the McKinney Police Department.

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