Three colluvial wedges were found along the hanging wall suggesting three prehistoric earthquakes have occurred and caused surface ruptures.

Plovdiv which was severely affected by the earthquake suffered further destruction when the second mainshock struck closer to the city.

Because the first earthquake took place on a Holy Saturday, many residents were outside their houses thus were not injured or killed when they collapsed.

In Thessaloniki, Greece, the earthquakes caused panic among residents and there was some light damage to the walls of houses.

The shaking collapsed a house in Komotini and caused large cracks to appear in the walls of buildings.

Tsar Boris III of Bulgaria was in Vrana Palace at the time of the disaster was brought to Chirpan, and later Plovdiv where he led a rescue mission to provide aid to victims.