Police are hoping toxicology reports will determine Christine Woo's cause of death

By Harriet Sokmensuer
Updated April 06, 2016 01:35 PM
Credit: Frisco Police Department

Authorities say they do not suspect foul play in the death of a Texas mother who was found in her SUV with her three children alive in the backseat, PEOPLE confirms.

Before her SUV was discovered last Thursday in the parking lot of a Target store in McKinney, Christine Thi Woo, 39, was last seen with her children at a Walgreens and at McDonalds on Monday, Sgt. Jeff Inmon of the Frisco police tells PEOPLE. Inmon says an investigation determined there was no foul play.

“Her death is under investigation still,” Inmon says. “[Hopefully] the toxicology report will help determine [her cause of death].

Woo’s children – Lauren, 5, Nathan, 3, and Leah, 1 – were severely dehydrated when they were recovered and were taken to a local hospital, Inmon says. Elle Bonner, Woo’s neighbor, tells PEOPLE the children have since been released.

Inmon was unsure whether police have questioned the children for further information.

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Neighbor: ‘She Was an Extremely Gentle Soul’

Frisco Moms Care, a local parenting group, held a vigil for Woo at a city park on Friday.

Cate Biggs, founder and president of the group, says Frisco citizens are coming together to pray for the family as they try to make sense of Woo’s death.

“It’s baffling to us all. She was right there in plain sight,” Biggs tells PEOPLE.

“The place where she parked her vehicle is a common place for moms to park and let their kids finish a meal or a nap before they go shopping,” Biggs continues, adding, “It s a common place. No one really noticed anything out of the ordinary that day. It’s tragic.”

Bonner, Woo’s neighbor and a member of Frisco Moms Care, says that Woo was always positive and kind: “She was an extremely gentle soul.”

Bonner lived next to Woo in the east Frisco neighborhood of Lawler Park. She says the neighborhood has rallied together to support the Woos. Bonner says Woo’s parents and in-laws are currently staying with her husband, Brandon, and children, who are now home.

Like Biggs, Bonner tells PEOPLE she and her neighbors still have many questions.

“This has consumed our thoughts,” she says. “This has baffled us and will continue to baffle us.”