A series of firebombings by suspected anarchists in Athens caused damage at a car dealership, a shop and at least three vehicles early Monday, police said.
The six attacks occurred within an hour and were spread over a wide area, police said.
The attacks followed six others 24 hours earlier that damaged two car dealerships, three retailers and a private security company's offices.
For the second night in a row, a Skoda car dealership was targeted; this time, at least three vehicles were destroyed in an explosion caused by multiple gas canisters. Firefighters are still trying to control the blaze.
Skoda is a major supplier of patrol cars to the Greek police.
No group has yet claimed responsibility for the attacks.
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