Three pre-dawn firebomb attacks apparently targeting the residences of members of Greece's governing conservative New Democracy party have left five people in hospital, with one in a serious condition, police have said.

The attacks, which took place between 4am and 4.45am today outside three apartment buildings in the northern Greek city of Thessaloniki, used crude explosive devices made with camping gas canisters.

The first two attacks led to blasts that caused only material damage, one police official said. The two buildings included apartments housing New Democracy figures.

All of the injuries were sustained from the last of the three attacks, in which cars and motorcycles were set on fire, police said.

One of the cars was reportedly owned by a parliamentary candidate for the New Democracy party.

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The candidate suffered burns and her mother was also taken to intensive care with burns, police said.

Three other residents in the apartment building were taken to hospital due to smoke inhalation.

There was no immediate ​claim of ​responsibility for ⁠the attacks.

"The world of New Democracy will not be terrorised," the party's political committee secretary Konstantinos Kyranakis said in a statement.

The attacks "were a proper terrorist attack on the homes of New Democracy members," he said, adding that "those who carried it out aimed to kill".

Attacks by shadowy Greek militant groups against symbols of power or the homes of politicians, police or other authority figures are relatively common, with most causing only material damage and no injuries.

A bomb exploded in July 2025 outside the Thessaloniki home of the president of Greece's association of prison guards.

The guard, named Konstantinos Varsamis on the association's website, was unharmed but two others sustained minor injuries from shattered glass.

In June 2024, a police officer guarding the home of a top judge in Athens suffered face and arm injuries after a pre-dawn gasoline bomb attack.

(c) Sky News 2026: Five people injured after firebomb attacks targeting politicians in Greece