Gunmen kidnapped eight foreign oil workers from a vessel off Nigeria's Niger Delta early on Saturday, bringing to 16 the number of industry workers seized in the past 48 hours, security sources said. The men were taken from a liquefied petroleum gas (LPG) tanker off the mouth of the Bonny river, a network of mangrove creeks opening into the Gulf of Guinea which is home to Africa's biggest oil industry, two private security contractors said. “It was last night at about 1 to 1.30 a.m. (0000-0030 GMT), there was an attack on a ship and 8 whites were kidnapped ... They were taken under gunfire,” said Lt. Col. Sagir Musa, military spokesman in the eastern Niger Delta. Their nationalities were not immediately known, he said.