The violence escalated in the mountainous region on Friday. On Tuesday, after almost four days of intense clashes, Azerbaijan and Armenia agreed on an immediate ceasefire in Nagorno-Karabakh.
"In four days, about 50 people were killed on the Armenian side, over 100 were injured. Out of those killed, whom I call killed, about 26 are missing. In fact, of course, they are killed," Arsen Melik-Shakhnazarov told a press conference.
Nagorno-Karabakh lies within Azerbaijan but is controlled by ethnic Armenians. The conflict in Nagorno-Karabakh began in 1988, when the Armenian-dominated autonomous region sought to secede from the Azerbaijan Soviet Socialist Republic, before proclaiming independence after the collapse of the Soviet Union in 1991. The warring sides agreed to a cessation of hostilities in 1994.