A Twitter investor is suing Elon Musk and the social media platform over the handling of the billionaire's $44bn (£34.9bn) bid for the company.
The case alleges he violated California corporate laws in a number of ways.
It accuses the Tesla boss of "wrongful conduct" as his "false statements and market manipulation have created 'chaos' at Twitter's headquarters in San Francisco".
Twitter shares are around 27% lower than Mr Musk's $54.20 offer price.
The proposed class action lawsuit was filed this week at the US District Court for the Northern District of California by investor William Heresniak, who said he was acting "on behalf of himself and all others similarly situated".
A class-action is a lawsuit that has been filed or is defended by an individual acting on behalf of a group of people.
