A resident of the Sehleabad village of Azerbaijan's Terter region, Mubariz Aliyev was killed as a result of the fire from the Armenian side, Azerbaijan's Interior Ministry said on July 21.
He was killed while fishing in the Terter River of this region's Ashagi Chayli village, according to the ministry.
Aliyev's body has been recovered and delivered to his family.
The conflict between the two South Caucasus countries began in 1988 when Armenia made territorial claims against Azerbaijan.
As a result of the ensuing war, in 1992 Armenian armed forces occupied 20 percent of Azerbaijan, including the Nagorno-Karabakh region and seven surrounding districts.
The two countries signed a ceasefire agreement in 1994. The co-chairs of the OSCE Minsk Group, Russia, France and the U.S. are currently holding peace negotiations.
Armenia has not yet implemented the U.N. Security Council's four resolutions on the liberation of the Nagorno-Karabakh and the surrounding regions.