On a seasonally-adjusted monthly comparison basis, retail trade turnover at constant prices dropped 1.4% in June after its provisional annual increase of 0.4% in May was revised to a 0.5% decline, the statistics agency said, citing preliminary data.

The country's industrial production grew by 17.4% annually in June, following a revised annual increase of 20.5% in May, the Sofia-based institute said in a separate report, citing preliminary data.

On a seasonally-adjusted monthly comparison basis, industrial output edged down 0.8% after adding 1.4% in May.

A separate report also showed that construction output in Bulgaria eased by 0.5% on the year in June after rising by a revised 6.6% in May. On a seasonally-adjusted monthly comparison basis, total production in the construction sector fell 1.4% in June, following a revised increase of 1.9% in the previous month.