During this century, the Korca – Leskoviku fault zone was struck by 7 moderate earthquakes with magnitude Mw ranging 4.6 – 5.5. A series of earthquakes of maximal magnitude (Mw=5.5) started on June 01, 2019, at 04:26 (UTC), close to Floq village about 17 km south-west of Korca town. This earthquake on June 01, Mw5.5 was followed by 6 earthquakes (aftershocks) magnitude Mw varying from 4.6 to 5.1 expresses the increased seismic activity of the Korca-Erseka seismogenic zone. We present results from an analysis of focal mechanism of main shocks and their aftershocks. Focal mechanism solution of these moderate earthquakes was according to German Research Centre for Geosciences (GFZ). The analysis of the focal mechanisms indicates the predominance of normal faulting with a strike-slip component, and the NNW-SSE extension in southeastern Albania. The region affected by these moderate earthquakes during this century and the series of earthquakes June 01, 2019 together with the strongest earthquake of the May 1960 M6.2, forms a roughly N-S trending active seismotectonic zone in southeastern Albania which presents a threat to nearby urban areas from Albania, Greece and the North-Macedonia.