NEW : Local ##s say 17 dead and 50 wounded . NEW : Local leaders urge unity and ` ` self - determination '' Fights have raged between rival groups since the Gadhafi regime was installed last year . Residents from the largely Berber town of Zuwara are clashing with residents of Arab villages .
NEW : Local officials say 17 dead and dozens wounded . NEW : NTC leaders urge unity and `` self-restraint '' Fights have raged between rival groups since the Gadhafi regime was toppled last year . People from the largely Berber town of Zuwara are clashing with residents of Arab towns .