Two policemen were slightly injured on Sunday in a petrol bomb attack at the Greek ruling Radical Left SYRIZA party headquarters by a group of carnival masked persons, according to Greek police.

Some 30 individuals participated in the incident, according to the police officers who came under attack at the building's entrance in central Athens.

At least four petrol bombs were hurled and two cars were damaged. The attackers fled after breaking the office's windows on the ground floor. Police have detained 21 suspects, according to police sources.

"Today's criminal attack against SYRIZA's offices is an attack against Democracy," read a party announcement, stressing that lives were put in danger by "gangs with no ideology".

SYRIZA was first elected in office in January 2015 on an anti-austerity platform, but eventually also implemented harsh austerity measures under the pressure of Greece's international lenders.

The debt laden country adopted its first bailout program in May 2010 to avert financial meltdown and the prospect of Grexit.

Anarchists have targeted numerous times since then, mainly with petrol bombs, the headquarters of parties who ruled Greece in the past.

Source: Xinhua