A lawyer says 12 visibly wounded suspects accused of killing a police inspector were tortured repeatedly by police in prison.
The group appeared in court Friday with severe cuts, bruising and swollen limbs.
Lawyer Charles Kwaramba told the Harare court that the suspects, members of Prime Minister Morgan Tsvangirai's former opposition party, were detained in a police crackdown in a western Harare township since the killing on Sunday.
Kwaramba says police denied them medical attention.
Amid mounting tensions ahead of calls for elections this year, Tsvangirai's party denied involvement in Sunday's slaying outside a township bar. Police vowed they would avenge their colleague's death and hunt down "traitors" in the former opposition.