An Afghan judge has postponed issuing verdicts for the 19 police officers charged over the mob killing of a woman in Kabul.

Safiullah Mojadedi said Sunday that more time is need to complete the investigation into the officers, who are charged with failing to prevent the March 19 attack on the woman named Farkhunda. He did not specifically say when he'd issue the verdicts.

Of the 49 defendants charged over the slaying, four have been sentenced to death and eight to 16 years in prison. Another 18 were freed for lack of evidence.

Farkhunda was beaten to death by a mob after being falsely accused of damaging a copy of the Quran, an attack that shocked the nation.