ΑΝΑ-ΜPA/A home-made bomb caused a weak explosion outside the 4th-storey apartment of main opposition PASOK former minister Gerassimos Arsenis and his wife, PASOK officer on economic affairs Louka Katseli, shortly before noon on Wednesday, causing only material damage.

   The bomb, which exploded at 11:42 a.m., had been placed in the entrance hallway of the fourth floor of the apartment building in which the couple lives on Tsakalof street in the posh Athens district of Kolonaki.

   Twenty minutes earlier, at 11:22 a.m., an unidentified caller placed two calls, to Eleftherotypia newspaper and ALTER private radio station, warning of the bomb, which he said would explode at Katseli's office on Tsakalof street.

   A police counter-terrororism squad crew and bomb disposal experts investigating the incident were at the scene of the explosion.