According to Armenpress, Armenian political scientist Hrant Mélik-Chahnazarian published on the site voskanapat.info a letter issued on 28 April 2016 by a senior Azerbaijani army official, General Nedjmedin Sadikov, to Zakir Hasanov, the defense minister of Azerbaijan in which he reported Azeri losses during the “4-day war” against the forces of the Artsakh (Nagorno-Karabakh).
In this letter N. Sadikov writes that the losses of the Azerbaijani army between 2 and 6 April during the war against the Armenian forces on the frontier of Artsakh are 558 Azerbaijani soldiers killed and 1,293 wounded. Of these injured, 58 were in serious condition. It should be noted that on the Talish-Martakert front alone, Azeri losses were 98 soldiers. On the Armenian side the casualties were 102 soldiers and civilians.