Texas City police join search for Utah teen Alisa Petrov, missing since April 21, with a $20,000 reward offered.

Texas City police are helping search for 15-year-old Alisa Petrov, missing from Utah since April 21. The search expanded after a tip from the National Center for Missing & Exploited Children. Alisa, last seen in baggy jeans and a Harvard T-shirt, was possibly heading to Las Vegas. Her family offers a $20,000 reward for information leading to her safe return. Authorities urge anyone with information to call 911.