Nigerian military officials searching Friday for two Americans kidnapped at sea off Africa's west coast, said the ship they were seized from was found, but did not give more details, NBC News reported. "Yes, we are aware that they are missing, but we still do not have any information on the whereabouts of the men," Nigerian navy spokesman Kabiru Aliyu said. He added that they were "combing the creeks" of the Niger Delta, but officials had no hard information on the pair's whereabouts or who had taken them. U.S. officials confirmed to NBC News that two Americans were taken early on Wednesday in an area plagued by pirates, criminal gangs and active militant groups. Nigerian officials echoed American officials saying they believed that the abductions had been carried out by "criminals" and not politically motivated militants.