Video footage showing the detention of migrants in Southern Bulgaria done by volunteer squads has added to controversy in a country divided over the treatment of migrants trying to cross its borders.
The footage purportedly shows three men, supposedly from Afghanistan, lying on the ground with their hands tied behind their backs.
Bulgarian Prime Minister Boyko Borisov unveiled the completely renovated archaeological reserve Deultum near the village of Debelt in the municipality of Sredets on Sunday.
The reserve shows the rich cultural and historical heritage of the region.
All artifacts which have been found on the territory of the archaeological reserve are exhibited in the newly-constructed museum.
Bulgarian authorities detained eighteen illegal migrants and two suspected smugglers after stopping a minibus for inspection in the city of Burgas on Tuesday evening.
The group, which had crossed the Bulgarian border illegally, consisted of men, women and children who identified themselves as coming from Afghanistan, Syria and Iraq.
Experts are expecting heightened migrant pressure on the Bulgarian border with Turkey in April.
The forecast is based on the analyses of potential risks and information gathered by the security services, Darik radio informs.
At present the refugee flow in the region of Burgas has been put under control.
Officers of the border police department in the Bulgarian town of Tsarevo detained on Thursday 37 foreigners who had illegally entered into the country.
The officers uncovered the migrants when they stopped a Ford Transit van bearing British licence plates for inspection at the bridge over Karaagach river.
An attempted armed robbery of a security van in the Bulgarian town of Sredets on Monday morning left one of the attackers dead.
Two armed youths attacked the security van which was parked in front of the post office in the centre of the town.
The vehicle was transporting money allocated for the payment of pensions in the town.
Bulgaria's weather forecast service NIMH has issued Code Yellow alert for Burgas Region for Thursday, warning of potentially dangerous rainfall in the night to Friday.
Precipitation levels are expected to reach 15 to 25 liters per square meter in the southernmost areas of Burgas Region by midnight Thursday.