Three weeks after a deadly crackdown on pro-democracy protesters in Chad, the country’s chief of police and head of the gendarmerie have been replaced.

Chad is ruled by a military junta whose leader originally said he would step down, but recently announced he was extending his rule by another two years.

The announcement prompted mass protests by Chadians demanding a return to civilian rule.

Dozens of civilians were killed in those protests leading to international criticism and a crisis summit of central African leaders.