(Reuters) -Mahmoud Khalil, the Columbia University student and pro-Palestinian activist who was detained by U.S. immigration authorities for more than 100 days, is seeking $20 million from the Trump administration over what he says was his false imprisonment and malicious prosecution.

Palestinian student activist accuses administration of carrying out targeted arrests designed to ‘terrorize’ him and his family

The legal claim marks a significant step toward potential civil litigation and comes as Khalil's case continues in immigration court.