The European Earthquake Monitoring Centre recorded the quake's epicentre at 22 km northwest of the Greek capital city.
Reuters reported that people were running from buildings in panic while high rise towers had been evacuated.
This is believed to be the first earthquake to hit Athens since the deadly one in 1999 - which left 143 people dead, 700 injured and 70,000 buildings damaged.
There were no immediate reports of injuries or damage and reports say the tremors did not last long.
Separatist group fires upon Pakistan passenger train carrying hundreds
A separatist group fired at a passenger train carrying hundreds of passengers in southwestern Pakistan on Tuesday, injuring a train driver, police and railway officials said.
Three dead in Ukraine's biggest drone attack on Moscow
Ukraine targeted Moscow early on Tuesday in what seemed its biggest drone attack of the war on the Russian capital, killing at least three people, sparking fires and suspending air and train transport in the region, authorities said.
Philippines' ex-President Duterte arrested at ICC's request
Former Philippine President Rodrigo Duterte was served an Interpol arrest warrant from the International Criminal Court (ICC) on his arrival at Manila's main airport on Tuesday, the government said.
Syria's president signs deal with Kurdish-led SDF to merge forces
The Kurdish-led and US-backed Syrian Democratic Forces, which controls much of Syria's oil-rich northeast, signed a deal with the Damascus government on Monday to join Syria's new state institutions, the Syrian presidency said.
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