NEW : Witnesses observe intermittent artillery fire from Turkey into Syria , CNN Turk reports . Syria says it is investigating source of gunfire fired into Turkey . No evidence of broader conflict , U.S. defense official says . They live in fear , '' he told CNN Turk . Comment:
NEW : Witnesses observe intermittent artillery fire from Turkey into Syria , CNN Turk reports . Syria says it is investigating source of gunfire fired into Turkey . No evidence of broader conflict , U.S. defense official says . Comment: