A Yemeni shot dead an American and a Canadian employed at a Western oil firm in the Arab state on Tuesday and then killed himself, a Yemeni official said.
The unidentified man also shot dead another Yemeni national employed at an oil firm in the Marib province. "He killed himself after his act. The motive is not yet known," the official told Reuters.
U.S. firm Hunt Oil is the only oil firm operating in Marib. (Albawaba.com)