Eight U.S. states, including California and Massachusetts, announced on Wednesday that they had launched a bipartisan, nationwide probe of TikTok, focusing on whether the popular video-sharing app causes physical or mental health harm to young people.

A bipartisan group of state attorneys general is looking at whether TikTok operates in a way that possibly "exacerbates physical and mental health harms."

The investigation into TikTok is the latest evidence of momentum behind the push for greater protections for children online.

A bipartisan coalition of attorneys general are investigating TikTok’s impact on the well-being of children, the group announced Wednesday. 

It will probe the increasing amount of time teens are spending on the platform.

The group is looking into the Chinese-owned video site for the harms it may pose to younger users.

Today, Attorney General Maura Healey launched a nationwide investigation into whether TikTok is designing, operating, and promoting its social media platform to children, teens, and young adults in a manner that causes or exacerbates physical and mental health harms. Attorneys general nationwide are...