The International Criminal Court on Wednesday convicted an al Qaeda-linked leader of crimes against humanity and war crimes that took place in Timbuktu, northern Mali.

Al Hassan Ag Abdoul Aziz Ag Mohamed Ag Mahmoud, who was a senior member of the Islamic Police, was recruited by al Qaeda leaders, the ICC said in a statement.

The Islamic Police played a “pivotal role” in the system that al Qaeda, alongside Islamist group Ansar Dine, put in place to commit crimes against humanity and war crimes in Timbuktu between April 2012 and May 2013, the ICC said.

Al Hassan was convicted by majority of directly committing, contributing to, or aiding and abetting crimes against humanity of torture and war crimes of torture and outrages upon personal dignity, the ICC confirmed.

The court, in the Dutch city of The Hague, acquitted him of crimes related to rape, sexual slavery, forced marriage and attacking protected objects due to insufficient evidence that he was responsible, the statement said.

The ICC said that 2,196 victims participated in the trial proceedings. Across 195 hearings, 7,896 documents were recorded and 13,275 items of evidence were submitted, the court said.

Al Hassan will remain in detention until he is sentenced in a separate hearing. Parties have 30 days to appeal the conviction.

They carved out a large portion of the region and began instituting their own laws.

They banned music, smoking, drinking and watching sports on television, and destroyed historic tombs and shrines in the north.

Public executions, amputations, floggings and other inhumane punishments were also common, the United Nations said at the time.