THE HAGUE, Netherlands (AP) — A human rights organization representing ethnic Armenians submitted evidence to the International Criminal Court on Thursday, arguing that Azerbaijan is committing an ongoing genocide against them.

Azerbaijan’s government did not immediately comment on the accusations. The neighboring countries have been at odds for decades over the disputed territory of Nagorno-Karabakh, and are already facing off in a separate legal case stemming from that conflict.

Lawyers for the California-based Center for Truth and Justice say there is sufficient evidence to open a formal investigation into Azerbaijani President Ilham Aliyev and other top leaders for genocide. They have submitted a so-called Article 15 communication urging the court’s chief prosecutor Karim Khan to look into alleged atrocities.

Khan’s office will now consider the evidence submitted and determine if the court will open an investigation, a decision expected to take months.