The Police Ombudsman is investigating the circumstances surrounding the death of a 44-year-old man in Co Derry.
The man's body was discovered at a house in Portstewart shortly after 9am.
Police, who were called to a reported assault at the house in the Lever Park area of the town, found a woman with facial injuries outside it.
It is understood that the officers remained outside of the house until they established that it was safe to enter.
When they entered they found the body of the man with fatal knife wounds.
Police also discovered the body of a dog in the house, which had been attacked.
The Police Ombudsman independently investigates all incidents in which a person dies shortly after contact with police.
