Poland is set to build watchtowers along the border to the Russian exclave of Kaliningrad, a local news agency reports. The towers, costing the Polish government £2.5million, will range from 115ft to 164ft and help monitor the 124mile long border between the two countries using CCTV. The increased border monitoring comes amid heightened tensions between Russia and Poland, a member of both NATO and the European Union, over the conflict in Ukraine. Keeping an eye out: Poland is erecting watchtowers along the border to Russian exclave Kaliningrad (pictured) as tensions between the two countries are heightened . Last month, Moscow announced plans on placing state-of-the-art Iskander missiles in Kaliningrad  for what government representatives called a 'major military exercise'. Russian President Vladimir Putin has also been accused of singling out Poland as an enemy in the ongoing conflict in Ukraine, accusing it of training 'Ukrainian nationalists' and instigating unrest. 'We are currently in the test phase of the technical installations on the towers,' Mirosława Aleksandrowicz from the Warmia-Masurian Border Guard told the PAP news agency. The construction of the watchtowers, due to be finished in June, is set to cost the Polish government 14million zloty (£2.5million) with a majority of the funding coming from the EU's External Borders Fund. Kaliningrad, which has a population of just under 1million, plays an important role in the maintenance of the Russian Baltic fleet. Getting ready: The CCTV towers will  will monitor the border between Poland and Kaliningrad, where Moscow recently announced they are set to place state-of-the-art Iskander missiles . When neighbouring countries Poland and Lithuania joined the EU in May 2004, strict border controls were imposed. Moscow has proposed visa-free travel between Kaliningrad and the EU several times, but the motions have been rejected. The new border watchtowers will be erected at a time when tension around the Baltic Sea is reaching new heights. Last month, Swedish Air Force and NATO jets tracked four Russian combat aircraft - two long-range, nuclear-capable Tu-22M3 bombers and two Sukhoi Su-27 fighters - flying with their transponders turned off in international airspace over the Baltic Sea. NATO said it scrambled Danish jets and Italian jets based in Lithuania  to identify the Russian aircraft which it said were heading to Kaliningrad. 'The Russian military aircraft did not use their onboard transponder; they were not in contact with civilian Air Traffic Control and they were not on a pre-filed flight plan,' a NATO military officer said. Last month, Russian military maneuvers that spread from the Arctic to the Black Sea involved 80,000 troops, about 100 navy ships and more than 220 aircraft.
CCTV towers will monitor the border between Poland and Kaliningrad .
Towers will range from 115ft to 164ft and cost £2.5million to build .
Moscow has announced they are set to place missiles in the exclave .
Both NATO and Russia are carrying out military exercises in the Baltic .