By David Shepardson

Utah sued Chinese-owned app TikTok on Tuesday, accusing it of harming children by intentionally keeping young users spending unhealthy amounts of time on the short-video sharing platform.

The Utah suit is the latest action challenging the popular app in the United States and comes as Congress has been considering legislation for months that would enable the Biden administration to restrict or ban TikTok over concerns of potential spying.

"What these children (and their parents) do not know

is that TikTok is lying to them about the safety of its app and exploiting them into checking and watching the app compulsively, no matter the terrible effects it has on their mental health, their physical development, their family, and their social life," said Utah Attorney General Sean Reyes in a filing.

ByteDance-owned TikTok, which has more than 150 million U.S. users, denies it improperly uses U.S. data and did not immediately comment.

Utah's suit filed in state court said the videos leverage "highly powerful algorithms and manipulative design features -- many of which mimic features of slot machines" and the result "of these manipulative tactics is that young consumers become hooked."

Utah is seeking civil penalties as well as an injunction prohibiting TikTok from violating state law that protects consumers from deceptive business practices.

The Utah lawsuit is similar to an action brought against TikTok by Indiana in December. That case is pending in state court.

Arkansas also sued both TikTok and Facebook-parent Meta in March "for pushing addictive platforms."

On Thursday, a judge will hear arguments in TikTok's lawsuit seeking to block Montana's first-of-its kind state ban on the use of TikTok before it takes effect Jan. 1. Montana's legislature approved legislation to ban TikTok citing spying concerns.

Last year, a group of Republican lawmakers said "many children are exposed to non-stop offerings of inappropriate content that TikTok’s algorithm force-feeds to them."

(Reporting by David Shepardson; Editing by Rod Nickel)