An earthquake measuring 5.4 on the Richter scale was recorded between the Cycladic islands of Amorgos and Astypalaia at 11.52 p.m. on Friday night, followed by a 4.1 Richter aftershock at 12.48 a.m. on Saturday. The tremors were felt on a number of other islands, including Kos and Leros, but no injury or damage was reported. The epicenter of the quake was 250 kilometers northeast of Athens.

Coast guard officers rescued five Greek sailors on Saturday when the fishing boat they were sailing in sank between the islands of Lesvos and Aghios Efstratios in the northern Aegean. The sailors were taken to the hospital on Lemnos for medical checks. It was not clear what caused their boat to sink.

A bag full of Molotov cocktails has been found on the premises of the Aristotle University in Thessaloniki, the rector’s council said on Saturday. The university condemned anyone considering using violence and invited them to discuss their ideas with the academic community.

Four people have been arrested in Thessaloniki on suspicion of dealing heroin and cannabis, police said on Saturday.