Students march, gunman shoots police bus in Greece

Hundreds of anarchists chanting "cops, pigs, murderers" marched through Athens on Tuesday hours after a gunman opened fire at a riot-police bus in a third week of anti-government protests since police shot dead a teenager.

An unidentified gunman shot at the bus carrying 19 officers when it stopped at traffic lights outside a university campus in eastern Athens at around 5 a.m.

Two bullets hit the bus, bursting a tyre, but no one was injured in the incident, which is being investigated by counter-terrorism police.

It came after a two-day lull in Greece's worst riots in decades, sparked by the shooting of 15-year-old Alexandros Grigoropoulos.

"It's worrying us," police spokesman Panagiotis Stathis told Mega TV. "We collected seven bullet cases from the spot."

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