Police on the island of Kalymnos in the Dodecanese were yesterday seeking the assailants who planted a large quantity of dynamite that exploded under the car of a 35-year-old local teacher, causing serious damage but no injuries. Officers gave no indication of a possible motive for the attack which destroyed the car and damaged the exterior of a nearby house. Meanwhile in Athens, suspected anarchists staged a string of bloodless arson attacks. In the southern Athens district of Nea Smyrni, homemade bombs detonated under two parked cars belonging to United Nations diplomats. At around the same time vandals smashed the facade of conservative New Democracy’s local office before dousing the interior with gasoline and setting it alight. In Thessaloniki, several cars were destroyed in three arson hits.