Swiss-French banker Jean-Claude Oswald, who is facing charges of money laundering and bribery in connection to an arms procurement program, went missing on Tuesday after removing his monitoring bracelet, Greece's Justice Ministry said.
Oswald, who appeared in an Athens court earlier in the day where his case was being heard, destroyed the device's strap and disappeared, it said.
Officers of the Greek Police's (ELAS) now-defunct motorcycle-riding DELTA force were attacked on Monday by a group of around 50 self-styled anarchists outside the Athens Court of First Instance.
Three were being treated at the capital's 401 Military Hospital, one with head injuries, after the unidentified assailants hit them with helmets and wooden sticks.
Officers of the Greek Police's motorcycle-riding force DIAS who visited the Athens court of first instance to testify as prosecution witnesses in a case relating to a motorcade by anarchists in 2012 were attacked on Monday by members of anti-establishment groups.
Supporters of the 21 defendants heckled the police officers when they arrived the court.
The trial of the 55-year-old woman accused of inflicting bodily harm to babies and resisting arrest will take place this coming Wednesday, an Athens court ruled on Friday.
The woman had been arrested for allegedly scratching babies with her nails or a sharp object on a number of occasions at a mall in Aghios Dimitrios, southern Athens.