A 48-year-old woman found stabbed to death in the bedroom of her apartment in Polychni, Thessaloniki had received 23 stab wounds to the chest, abdomen and limbs, a police coroner reported on Monday.
Police had originally reported eight stab wounds.
Police have arrested her 49-year-old Armenian husband as a suspect and charged him with murder in cold blood, illegal weapons possession and use.
The man was led before a public prosecutor and will next appear before Thessaloniki's 6th examining magistrate.
In a statement to the police, the suspect apparently confessed to killing his wife in the belief that she was cheating on him.
The suspect turned himself in at a police station and reported the murder on Sunday night.
A police patrol then visited the apartment and found the body and a knife believed to be the murder weapon.
The suspect has a history of mental illness.
This is the 14th violent murder of a woman committed in Greece this year for which a current or former male partner has been either convicted or is held as a suspect.