ns of enemy planes entered Iraqi air space at 0951 (0651 GMT). Iraqi air defences "opened fire on one of those enemy formations and our border observation post saw one of the enemy planes hit," the statement said. The statement said U.S. or British planes also violated Iraqi air space in the south of the country, coming from Saudi Arabia and Kuwait. "One of these formations approached one of our air defence sites and they were engaged and fired upon by one of our missile units at 1045 (0745 GMT)." The statement said these planes then fled and made no mention of any of them being hit. The incident in the northern region involved planes approaching from Turkey which "dropped four bombs on civilian sites, one of them the residence of a citizen", the statement said. Earlier, a Pentagon spokesman said U.S. warplanes had fired on Iraqi radar sites in the northern no-fly zone, the seventh such incident in the past two weeks. He said all planes returned safely to their Turkish bases and denied any had been hit.