An Afghan official says a suicide bomber has killed 10 civilians and wounded seven others in the southern province of Helmand. Provincial spokesman Dawood Ahmadi says the bomber targeted an Afghan army patrol Sunday at a bridge in Gereshk, a town just north of the provincial capital of Lashkar Gah. He says most of the dead were vendors selling goods along the highway. Helmand province was the scene of a major U.S., NATO and Afghan offensive last month that took control of the town of Marjah. Earlier Sunday, two civilians were killed and four others were wounded when a roadside bomb went off near a crowd of people celebrating the Afghan New Year in Khost province in eastern Afghanistan. That's according to Khost police Chief Yaqoub Khan.