The alleged ringleader of a foiled plot to massacre Somali Muslims in southwest Kansas is appealing his conviction and prison sentence.

The attorney representing Patrick Stein filed Monday a formal notice of appeal to the 10th Circuit Court of Appeals. Stein was one of three militia members convicted of planning to blow up a mosque and apartments housing Somalis in Garden City.

A judge sentenced Stein last month to 30 years for conspiracy to use a weapon of mass destruction and 10 years for conspiracy against civil rights. The sentences will run concurrently.

Stein will also return to federal court on Feb. 22 for a change-of-plea hearing and sentencing in a separate indictment alleging possession of child pornography. The material was discovered during searches in the bomb case.