Police in the Houston suburb of Sugar Land are asking for help locating two children who were taken by their biological “under suspicious circumstances” on Tuesday.

Sugar Land police say Taylor Hudson-Oneal, who is not the primary caregiver, was visiting with his ex-girlfriend and their two children on Tuesday when he “unexpectedly left” in the ex-girlfriend’s car along with the children.

“Taylor Hudson-Oneal is not the primary caregiver, does not live with the children and has limited contact with them,” police said, adding they were “concerned for the safety and welfare” of the two young children.

Elena Barras is 18-months-old old, and her brother Emmanuel Barras is 4-months old.

Hudson-Oneal was last seen wearing a red hoodie sweatshirt. The ex-girlfriend’s vehicle is a silver Volkswagen Passet with Texas license plate number PRK 5916.

Anyone who sees the children, Hudson-Oneal, or the car is asked to call Sugar Land Police at 281-275-2525.

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[Featured image: Elena Barras, Taylor Hudson-Oneal leaving with the children on Tuesday, and Emmanuel Barras/Sugar Land Police Department]