Opposition leader Hakainde Hichilema has been freed on bail after pleading not guilty to a charge of inciting violence.
He was arrested on Tuesday following the killing of pf member Harrison Chanda on monday evening.
A crowd allegedly killed Mr Chanda in Livingstone, ahead of a by-election that has now been postponed.
A court in Livingstone freed Mr Hichilema, the leader of the United Party for National Development UPND.