The figures show Azerbaijan bought $123 million in defence and aviation equipment from Turkey this year. Most of the purchases arrived were after July.
The data shows that sales jumped from $278,880 in the month of July to $36 million in the month of August, and $77.1 million in just September. Military sales to Azerbaijan in the first nine months of 2019 totalled $20.7 million.
Armenia and Azerbaijan were part of the Soviet Union and have been involved in a territorial conflict since gaining independence within the 1990s. The main issue is the disputed Nagorno-Karabakh region, internationally recognised as part of Azerbaijan but controlled by ethnic Armenians.
The fighting over Nagorno-Karabakh began on September 27. Each side has accused the other of targeting civilians. Both sides have rejected talks and ignored growing international calls for a ceasefire.
According to the latest figures, Azerbaijan in September climbed to the top of the list of Turkish arms buyers, followed by Oman and the United States with $63 million each.