The FBI is seeking the public's help in identifying a man the agency says appeared in an Islamic State propaganda add in September.<br/> <br />The man, the federal law enforcement agency says, was heard speaking both in Arabic and English with a North American accent.<br/> <br />The agency hoped that releasing a clip from the video online would help lead to possible tips.<br/> <br />It is believed that there are fewer than 10 Western hostages held by the Islamic State at this time.<br/> <br />Four Westerners have been beheaded by the Islamic State, which has come under air attack in Iraq and Syria by U.S., British, French and Arab fighter jets.
