Three Buffalo men could face up to 20 years in prison and a $1 million fine after pleading guilty to drug trafficking.

Michael Smerka, 56, James Simmons, 38 and Timothy Borkowski, 46, entered pleas Friday before U.S. Magistrate Judge Leslie G. Foschio.

The men purchased cocaine at an auto shop on Broadway Street in Sloan and then sold the cocaine to customers in Buffalo and Cheektowaga, according to assistant U.S. Attorney Michael L. McCabe.

The June 2011 arrests came after a lengthy investigation by the FBI’s Safe Streets Task Force and the Cheektowaga Police Department. Seven defendants have been convicted.