The excavations carried out in an area of 220m², at the left side of “Dom N. Kaçorri” street revealed the remains of a Roman building and 7 graves of the Early Medieval Period.
To the Roman period dates the corner of a room, measuring to 3.46 × 4.98m, and built in reticulate masonry. On its outer wall are attached two rectangular pits measuring to 0.75 × 0.6m; 0.55 × 0.54m and 0.72 × 0.65m. About 7 m on the north of the chamber was found an irregular rectangular pedestal (1.7 × 0.8 × 4.20 m).
In the recorded stratigraphical layers were founded various vessels types: amphorae of Dressel 2/4 and Beltran 2b of the Forlimpopoli type, fragments of eastern sigillata B, north African vessels, reddish varnished jars and pans from the Aegean dating from the 1st to 3rd century A.D. Close by the chamber was found a plaster debris layer. Some of the plaster pieces bear traces of frescos, decorated with geometrical motives on a white surface which are stylistically similar to the fourth Pompeian painting style. In this debris layer were also founded fragments of eastern sigillata B dating approximately to 75 – 150 A.D.
To the Early Byzantine period relates a wall section (6.7 × 0.6 × 1.7m) build up with half cut stones and mortar. Around the walls were founded amphorae of Keay types, Coarse Samos, LRA 4, and North African vessels.
During the excavation, to a depth level of 1.90 – 2.40m were discovered 7 graves covered with tiles. The graves goods consist of a bronze cross and 14 glass beads that date to the end of the 6th century to the 7th century A.D.
The walls of the first phase and the remains of the pedestal, as indicated by the construction technique might be part of a Roman building dated to the middle of the 1st century A.D. Because this structure is situated opposite to the amphitheatre, the research authors suggest that it might have been used as servicing room for this monument.
The data obtained from the excavations are not sufficient for determining the function of the Byzantine wall. The presences of the early medieval graves indicate that the area around the castle during this period was used as a cemetery.