Somali pirates have freed two merchant ships they had hijacked off the coast of the country, a maritime official said Saturday. «All the crew are safe aboard both vessels,» said Andrew Mwangura, head of the Kenyan chapter of the Seafarers Assistance Program. The ships, the MV Rozen _ a cargo ship that had been delivering U.N. food aid to northeastern Somalia _ and the MV Nimatullah are now sailing out of Somali waters, he said. Both vessels were released late Friday. Mwangura said a ransom had been paid but he did not have details, the Associated Press reported.