Human rights groups voiced outrage Wednesday after Italy released a Libyan warlord on a technicality, after he was arrested on a warrant from the International Criminal Court accusing him of war crimes and crimes against humanity.

ROME (AP) — Italian police arrested a Libyan warlord on a warrant from the International Criminal Court, but an Italian tribunal refused to approve the arrest and he was instead sent back to Libya, Italy's state-run RAI television reported.

Ossama Anjiem, who runs a major Libyan prison, was in Italy to watch a soccer match. He returned home after an Italian court found issues with the warrant for his arrest.