The Department of Infrastructure has refused to reveal how much it paid for bird-scaring vehicles at the airport for a second time.
A Freedom of Information request to the department in September asked for the cost of two Volvo XC40 Recharges bought for the Airport Fire Service - but the department said the information was commercially sensitive.
Now, a second request for the figure has also been refused for the same reason.
The DOI, however, did confirm the vehicles are advertised on Volvo's website for £44,600 each.
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