Marty Walsh

Boston Mayor Martin J. Walsh alongside Boston Redevelopment Authority Director Brian Golden at the December 10, 2014 Boston Chamber of Commerce breakfast.

(Garrett Quinn, MassLive)

BOSTON -- Boston officials are filing a lawsuit against the Massachusetts Gaming Commission according to sources with knowledge of the legal maneuver.

Details of the lawsuit were not immediately available.

Boston officials including Mayor Martin J. Walsh have expressed strong frustrations with the licensing process for the lone eastern Massachusetts casino.

The commission awarded a license to Wynn in September to build and operate a $1.6 billion resort style casino in Everett. Boston's relationship with Wynn has been strained due to disagreements over surrounding and host community agreement payments.