A manhunt has been launched in Athens for an 89-year-old suspect following a double shooting which left five people injured, according to police and local media reports.
The attacker initially opened fire at a social security agency in Kerameikos on Tuesday, wounding an employee in the leg, police say.
He then travelled to a courthouse around 5km (3.1 miles) away in Ambelokipi, where a further four people were reportedly injured, before fleeing the scene and leaving behind a shotgun, authorities add.
There is a heavy police presence at both locations and the motive for the shooting is not yet clear.
According to local media reports, the attacker entered the buildings with a shotgun concealed under his coat.
State broadcaster ERT showed surveillance footage of the suspect calmly leaving the building on foot - with police investigating the possibility he had caught a taxi to the second location.
"I saw the whole thing... he was firing at the ground," one eyewitness told state news agency ANA.
"Four women working at the small claims court were slightly injured," the head of the judiciary employees' union in Athens, Stratis Dounias, told the broadcaster.
ERT reported the five people - a man and four women - were left with non-life-threatening injuries in the shootings.
The gunman is still at large and authorities are continuing to investigate the attack.
Gun violence in Greece is relatively uncommon, as firearm ownership is allowed but heavily regulated.
