Police are looking for multiple murderer Michalis Makriyiannis after he failed to return from a prison furlough.
Makriyiannis had been given a five-day pass from Larissa Prison in central Greece but did not return to the jail.
It is the second time he has breached furlough terms. Makriyiannis went missing from Alikarnassos Prison in 2006 but was recaptured 15 months later.
Makriyiannis has received four life sentences for five murders, three attempted murders and several armed robberies.