Azerbaijan's Defense Ministry has said that troops of the separatist, Armenian-populated Nagorno-Karabakh region within Azerbaijan attacked Azerbaijani positions and wounded an Azerbaijani soldier, who was subsequently hospitalized.
The authorities of the separatist government countered that a 19-year-old Karabakh conscript was killed in the shoot-out.
The statement accused Azerbaijani forces of "agressive and criminal actions."
Earlier, Nagorno-Karabakh officials had accused Azerbaijani forces of violating the regional cease-fire about 1,000 times in the past week.
Aram Gyulnazarian is the 10th soldier on both sides to be killed so far this month along the Line of Contact that separates the two sides.
Azerbaijani and Armenian foreign ministers met on June 18 in Paris for a new round of internationally mediated talks aimed at resolving the conflict.
The two sides agreed on a cease-fire in 1994.
Based on reporting by Interfax, Trend, and Novosti-Armenia