A Greek policeman has been seriously injured after being shot by two gunmen in central Athens.
The pre-dawn attack targeted an officer guarding the culture ministry.
Two men opened fire with a Kalashinikov AK-47 and a handgun hitting the 21-year-old officer in the chest and leg.
As they made their getaway the attackers hurled a Russian-made hand grenade to cover their escape.
The Greek interior minister said: “The people that carried out this attack targeted democracy. No bullet or murderer can hurt police morale.”
A huge manhunt is underway following the shooting, which police say bore the hallmarks of an assault on a police bus in December.
Greece has been hit by weeks of rioting and unrest after police fatally shot a teenager on December 6.