Scores of people are fleeing parts of Burundi's capital before a looming security crackdown that has raised fears of a wave of killings.

A government-issued deadline to turn in illegal weapons or face extraordinary police action expires midnight Saturday.

The U.N. estimates that at least 198 people have been killed in Burundi since late April, when President Pierre Nkurunziza announced his bid that was ultimately successful for a third term in office. At least 13 people have died in the past week, with many coming from Bujumbura neighborhoods that are opposition strongholds. More than 200,000 people have fled Burundi.

Nkurunziza has told the police to use all means necessary to restore order, even though many here hold the security forces responsible for the killings that have raised international concern.