Awwal 23, 1432, Feb 26, 2011, SPA -- A suicide bomber has blown himself up at a sports field in northwestern Afghanistan, killing at least four people. Governor of Faryab province, Abdul Haq Shafiq, says the bomber attacked Saturday while people were playing buzkashi, a traditional Afghan sport. He says four were killed and 19 people were wounded, according to a report of the Associated Press.