Greek police escort two of four suspects to the courthouse on May 23, 2018, following the weekend mob attack on the 75-year-old mayor of Thessaloniki, the country's second-largest city. Image Credit: AFP

Thessaloniki, Greece: Three suspected far-right supporters received suspended jail terms on Wednesday for beating up the mayor of Greece's second city, Thessaloniki, at a weekend rally.

A 20-year-old man was found guilty of inflicting "dangerous bodily wounds" during Saturday's attack on Yiannis Boutaris and given a 21-month suspended sentence.

Two other men, aged 20 and 36, received slightly lesser terms after the tribunal in Thessaloniki convicted them of causing "material damage" and "social disturbance".

Boutaris, 75, had to be escorted from a rally commemorating the massacre of Black Sea Greeks in Turkey during and after the First World War when members of the crowd turned violent.

A fierce opponent of Greek ultra-nationalism, Boutaris told the court he had been heckled and called a "Turkophile and dirty Jew" just before the attack.

Footage of the incident shows people starting to throw objects at him as he prepared to leave. The mayor, who was later hospitalised, is seen falling to the ground.

Some of the attackers then struck his car, smashing the rear window before it sped off.

The office of Prime Minister Alexis Tsipras denounced the attackers as "far-right thugs".

However, the assault was praised by the daughter of Greece's neo-Nazi party Golden Dawn leader, Ourania Michaloliakou, who accused Boutaris of being "anti-Greek".

The three suspects insisted Wednesday they had not intended to cause any harm and had been "dragged into" the protest by some in the crowd.