MADISON, Wis. -

A federal grand jury sitting in Madison returned indictments against two men Wednesday.

Melvin R. Thomas, also known as Melvin R. Thompson, 32, of Madison, is charged with conspiracy to possess and distribute heroin.

The indictment alleges that the conspiracy involved 100 grams or more of heroin, and that the conspiracy operated from September 2010 to December 2010. He is also charged with possessing heroin with intent to distribute on Nov. 10 and Dec. 10, 2010.

The indictment alleges that Thomas would order quantities of heroin by telephone from a source in Chicago, that he would travel to Chicago to purchase the heroin from the source, and that he would bring the heroin back to the Madison area for resale to others.

If convicted, Thomas faces a mandatory minimum penalty of 10 years in federal prison and a maximum penalty of life in prison.

In the second indictment, a Fitchburg man is charged with distributing heroin.

The indictment alleges Antoine M. Edwards, 39, distributed heroin on Nov. 12.

If convicted, Edwards faces a maximum penalty of 20 years in federal prison.