Texas Attorney General Ken Paxton said Thursday that his office is investigating Celsius Holdings' energy drink Alani Nu and whether the company deceptively markets the product to teenagers.

The investigation comes after a South Texas family filed a wrongful death suit against Celsius Holdings, alleging their 17-year-old daughter, Larissa Rodriguez, died after consuming large amounts of the highly caffeinated drink.

Sign up "Texas families deserve to know that the products marketed to their children are safe and not filled with dangerous levels of certain ingredients," Paxton said in a statement.