RABAT, March 14 (Reuters) - Moroccan Office of Hydrocarbons and Mining (ONHYM) said Tarfaya offshore block drilling by Cairn energy CNE.L and Genel GENL.L , with a depth of 2,112 meters, has faced a column of heavy-oil more complex to exploit, a statement from ONHYM said.

(Reporting By Aziz El Yaakoubi)

((aziz.elyaakoubi@thomsonreuters.com)(+212623934595))