"The first suspects in the crime were detained," the source said.
On Wednesday, the Russian Defense Ministry said that several peacekeepers were killed when their car came under shelling the area of Canyataq in Nagorno-Karabakh. Earlier on Thursday, Azerbaijani President Ilham Aliyev apologized to Russian President Vladimir Putin and expressed deep condolences over the tragic death, adding that a thorough investigation will be carried out into the incident.