Azerbaijan's Defense Ministry informed NATO about Armenia's provocative actions that were committed in early April on the contact line between the troops of Azerbaijan and Armenia, the ministry's press service said Apr. 15.

The ministry provided the NATO Liaison Officer in the South Caucasus William Lahue with detailed information about the events committed in early April in the zone of the Nagorno-Karabakh conflict.

On the night of April 2, 2016, all the frontier positions of Azerbaijan were subjected to heavy fire from the Armenian side, which used large-caliber weapons, mortars and grenade launchers. The armed clashes resulted in deaths and injuries among the Azerbaijani population. Azerbaijan responded with a counter-attack, which led to liberation of several strategic heights and settlements.

Military operations were stopped on the line of contact between Azerbaijani and Armenian armies on Apr. 5 at 12:00 (UTC/GMT + 4 hours) with the consent of the sides, Azerbaijan's Defense Ministry earlier said. Ignoring the agreement, the Armenian side again started violating the ceasefire.

The NATO was provided with information based on facts about the dead and wounded people among the peaceful Azerbaijani population, as well as damage to local infrastructure as a result of continuous shelling of the Azerbaijani settlements by heavy artillery of the Armenian military units.

Also the information was provided about the retaliatory measures taken by Azerbaijan's armed forces on the frontline to prevent Armenia's provocations and to ensure the security of Azerbaijan's civilian population, said the press service.

The NATO representative was also presented with evidence on distorted facts of the Armenian side on the alleged "aggressive actions" of Azerbaijani servicemen towards the Armenian population. The data reflecting the reality of the recent events were also presented.

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 1994 ceasefire agreement was followed by peace negotiations. Armenia has not yet implemented four UN Security Council resolutions on withdrawal of its armed forces from the Nagorno-Karabakh and the surrounding districts.