LAS CRUCES, N.M. (AP) — Authorities say they have arrested 13 Las Cruces residents suspected of participating in a heroin trafficking circle.

The Las Cruces Sun-News reports authorities announced Tuesday that 15 people are facing federal heroin trafficking charges as the result of a two-year multi-agency investigation.

A statement from the Department of Justice says 13 of the 15 defendants in the case were in custody as of Tuesday.

Authorities have not been able to apprehend a Mexican man suspected of being the source of supply for a heroin trafficking operation that supplied heroin to couriers that would smuggle the drug from Ciudad Juarez to El Paso, Texas and Las Cruces.

A Las Cruces man also facing charges related to the heroin trafficking ring is also on the run.

All the defendants face up to 40 years in prison if convicted.

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Information from: Las Cruces Sun-News, http://www.lcsun-news.com