A murder investigation has been launched following the death of a woman in her 30s in the Short Strand area of east Belfast.
Police said they received a report of the death of a woman at a house in the Madrid Street area shortly before 16:25 BST on Wednesday.
Her body was found in a bedroom with serious injuries to her head.
Another woman in her 40s and two men, both in their 20s, have been arrested on suspicion of murder.
They remain in custody.
Police are still at the scene this morning as enquiries continue.