ABRITUS (Galena Radoslavova – galena_rz@abv.bg, Georgi Dzanev) The explorations continued in Sector 3, situated from the inner side of the northern fortification wall, between Towers 9 and 10. A room of the 6th century AD was discovered, 6.50 m by 3.80 m in size and with an entrance, 1.10 m wide. Its walls were constructed in rubble masonry and their inner side was plastered with adobe. Sherds of the 6th century AD and a bronze coin of Justin II and Sophia were found. The room was destroyed during the AD 580s. Its floor was constructed over the burned debris of Room 3, which measured 6.50 m by 4.50 m and had three entrances. Sherds and coins of AD 350 – 490 were found in Room 3. Room 2, 3 m by 6.90/6.45 m in size, was thoroughly explored to the west of Room 3. The finds from Room 2 were synchronous to the finds from Room 3. Walls of an earlier room were discovered beneath the floor level of Room 2. Judging from the finds: a jug, a pot, fragmentary marble vessel, coins of Constantine the Great, Fausta and Constantius II, the earlier room dated to AD 325 – 350. The walls of Rooms 2 and 3 were built in rubble masonry and their upper parts were constructed with sun-dried bricks. Burned debris from the rooms was discovered. Their roofs were covered with tegulae and imbrices. The explored buildings were situated along the northern fortification wall, on the northern side of the street that led to the eastern gate of the town.