Police were called to an address in Brantwood Avenue, Carlisle, at 10.49am today (April 12).
A man was subsequently pronounced deceased.
A murder investigation is underway. Two men have been arrested and are in custody.
The public are likely to see a larger than normal police presence in this area as inquiries are carried out.
Eyewitnesses say that armed police, ambulances and helicopters were seen in the area of Brantwood Avenue.
There have been unconfirmed reports of a stabbing.