The person, who was killed inside a private house in Espoo on February 27, was father of the suspect, police said on Monday. Police interrogated the son during the weekend and knew that he used sharp knife in the murder. The murder took place at about 11:00 p.m. inside the apartment at Rastaspuisto area where only the victim and the suspect were present, said police. The son attacked the father with sharp weapon resulting his (father) death on the spot. Responding to an alarm, police and rescue service people rushed to the spot and recovered the body with several marks of injury. Police also arrested the son from in front of the building after the incident. Police will determine the reason behind the death after forensic examinations. They, however, did not divulge the detail identities of the deceased and the suspect and the motive of the murder. Police are continuing investigation into the incident and the suspect will be placed before the court on Tuesday seeking remand into custody.