The shooting of two policemen in central Athens, leaving one seriously wounded, is likely to have been a criminal attack and not politically motivated, Greek authorities said.
Often targeted by left-wing groups, police initially suspected urban guerrillas in a shooting similar to many since police killed a teenager in December, sparking Greece's worst riots in decades.
"We are investigating all possibilities, but the way they acted and the weapons they used indicate a common criminal act," Greek police spokesman, Panagiotis Stathis, told Reuters.
The officers were patrolling the centre of Athens when they were shot by two unknown attackers who snatched their guns and mobiles and escaped on a motorcycle.
Policeman Spyros Theodorou, 30, was hospitalised with serious injuries after being shot in the head.
In January, Greece's militant guerrilla group, The Revolutionary Struggle, claimed responsibility for shooting a policeman guarding the Culture Ministry in Athens, weeks after the killing of 15-year-old Alexandros Grigoropoulos.
Still reeling from last year's riots, Greek authorities have asked British police for help in investigating a wave of attacks against police, banks and businesses.
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