Attackers targeted the homes of three politicians from Greece's ruling party with homemade explosives on Wednesday, leaving one person dead and four wounded, police told the AFP news agency.

The attacks, which happened in the early hours in the northern city of Thessaloniki, were carried out using devices made from gas bottles.

Prime Minister Kyriakos Mitsotakis, the New Democracy leader, expressed "outrage and anger" at what he termed a "cowardly, terrorist and murderous attack" and said he would visit Thessaloniki later to support his party colleagues.

The Kathimerini news website reported that the parents of former party candidate Afroditi Nestora were injured and taken to hospital and named the other two targets as the party's executive committee president Zisis Ioakimovic and former MP Savvas Anastasiades.

Police confirmed that five people were injured but did not release any names and did not say who might have carried out the attacks or suggest a motive.