The father of Utah cheerleader Addi Smith called for a welfare check after being unable to reach his daughter, hours before authorities discovered her and her mother's bodies in Las Vegas.

Tragedy in Las Vegas ... a mother allegedly shot and killed her 11-year-old cheerleader daughter before turning the gun on herself in a suspected murder-suicide. Cops say 38-year-old Tawnia McGeehan and her daughter, Addi Smith, were found dead…

Tawnia McGeehan -- the mom who allegedly killed her teen daughter Addi Smith and then herself in a Las Vegas hotel room over the weekend -- had a custody battle for her daughter, which lasted 9 years ... according to court documents obtained by…

Tawnia McGeehan and her daughter, Addi Smith, were found dead inside a Las Vegas hotel room after missing a cheer competition. Police believe the Utah mother shot her child before taking her own life. A note was discovered, and the investigation continues. Utah Xtreme Cheer shared an emotional tribute, calling the loss heartbreaking for the entire community.