PITTSBURGH — A former assistant high school football coach is set to plead guilty to his role in a cocaine pipeline from Texas.

Carlos Cleckley, who formerly coached at Beaver Falls High School, is scheduled to change his not guilty plea today before a federal judge.

That will make Cleckley the third of four defendants to plead guilty in the case.

Adrian Taylor, 36, of Beaver Falls, and the alleged supplier, Vincent D. Middlebrooks, 39, of Houston, already pleaded guilty. Authorities say Middlebrooks supplied cocaine since 2009 in Beaver County.