SAN FRANCISCO, March 27 (Reuters) - Three users of the Facebook Messenger app sued Facebook on Tuesday, saying the social network violated their privacy by collecting logs of their phone calls and text messages, in the latest legal challenge facing the company.

The U.S. lawsuit filed in federal court in the Northern District of California seeks status as a class action on behalf of all affected users and asks for unspecified damages.

(Reporting by David Ingram; Editing by Sandra Maler)