THESSALONIKI, Greece (AP) -- Authorities say a 5.2-magnitude tremor has hit northern Greece. They say the tremor occurred at 07:03 p.m. local time about 40 kilometers southeast of Thessaloniki, Greece's second-largest city. It was followed by a 4.2-magnitude quake four minutes later, along with several smaller tremors. No damage has been reported, but the tremor was felt over a large swathe of northern Greece. A seismologist told The Associated Press that it was highly unlikely that a small local fissure would produce a devastating event.