TORONTO, April 13, 2017 /PRNewswire/ – Sierra Metals Inc. (TSX: SMT) (BVL: SMT) (“Sierra Metals” or “the Company”) has updated its Mineral Resource Estimate at the Company’s Cusi Mine, located in Chihuahua State, Mexico. The updated Mineral Resource Estimate disclosed herein is the result of drilling programs completed between January 2014 and January 2017. This review does not include any data from the 15,000-metre drilling program that was focused on the high-grade Santa Rosa de Lima zone. Drilling in this area is based on a new conceptual interpretation of the Santa Rosa de Lima structure at the Cusi Mine. This interpretation is based on exploration drilling of the NW-SE regional structural system and demonstrates that mineralization is consistent across the assessed area. Management are encouraged that through exploration programs such as this one it will demonstrate that there is a strong potential for further structural extensions of high-grade zones at the Company’s Cusi Mine.