Aden - At least 38 people were killed on Sunday in clashes between rebel forces and tribes near a southern oil region, a security official and tribal sources said.
The fighting erupted when tribesmen attacked positions held by Huthi rebels near the oil-rich area of Usaylan in Shabwa province, the sources said.
"The Huthis and their allies [troops loyal to ex-strongman Ali Abdullah Saleh] have lost 30 of their men in fighting that killed eight tribesmen," the security official said.