Updated

Serbia has signed a deal to buy nine light choppers from Airbus Helicopters amid tensions in the region triggered by Russia's donation of jet fighters to the Balkan state.

Serbia's Defense Ministry said Thursday the deal is for H145M helicopters and includes spare parts and the training of pilots and maintenance crews for the aircraft, which will be used both by the military and police.

Financial details were not disclosed.

Earlier this month, Russia announced it was donating six aging MiG-29 jet fighters to Serbia that need to be overhauled at a cost of over 180 million euros ($188 million).

Recent tensions between Serbia, a traditional Russian ally, and NATO-member Croatia have sparked a mini arms race between the two former Yugoslav nations, which were at war in the 1990s.