ABIDJAN, Ivory Coast (AP) — Street violence flared Tuesday for a second day in Abidjan, where gangs of youths divided the city into ethnic enclaves, setting up roadblocks to target members of enemy tribes.

Clashes between the mobs and security forces left at least seven people killed in Abidjan's working class Abobo suburb, witnesses said.

Many parts of the commercial center were calm, with a few stores reopening after Monday's violence, which prompted a nationwide curfew and state of emergency. But in Abobo and other densely populated neighborhoods, riot police battled supporters of opposition leader Alassane Dramane Ouattara, whom the Supreme Court disqualified from weekend legislative elections on the basis of citizenship doubts.

At makeshift roadblocks of logs, rocks and burning tires, young men carrying machetes and iron bars screened passers-by and demanded identity cards to check their names — which often indicate ethnic, and sometimes religious, background. In many cases, the mainly northern, Muslim followers of Ouattara bludgeoned and stabbed those identified as southerners. Some pro-government southerners carried out revenge attacks.