Police said there was no warning or any claim of responsibility for the attack. -- PHOTO: REUTERS
ATHENS - TWO gunmen shot dead a Greek anti-terrorist policeman guarding a witness in Athens on Wednesday then fled on a motorcycle, police said.
'He was sitting in his car, on duty guarding a witness when he was attacked,' said a police official who requested anonymity.
The witness was involved in a case against an urban guerrilla group, he added. The unidentified attackers disappeared in the streets of the densely populated Patissia area of Athens.
Police said there was no warning or any claim of responsibility for the attack, the latest of several against the police in Greece this year.
Leftist and anarchist guerrilla groups have launched a wave of violence against police and business targets since a policeman shot dead a teenager in Athens in December, prompting the worst riots in decades.
'We are investigating whether one of these groups was behind the shooting,' the police official said. -- REUTERS
