Twitter Inc. sued Elon Musk on Tuesday for violating the $44-billion US deal to buy the social media platform and asked a Delaware court to order the world's richest person to complete the merger at the agreed $54.20 US per Twitter share, according to a court filing.

The Weinstein Co. film company on Thursday was sued by its founder and former co-chairman Harvey Weinstein, who is seeking information that could help defend himself against sexual assault allegations and also help defend the company against potential liability.