Lincolnshire Police are investigating the death of a nine-year-old boy in Lincoln on December 23.
Officers were called just before midday to an address in Pennell Street from where the boy was taken by ambulance to Lincoln County Hospital. He was sadly pronounced dead a short time later.
His death is currently being treated as suspicious and a 64-year-old man is helping police with enquiries.
A cordon had been put in place at the address while officers carry out a number of investigations at the scene and is expected to remain overnight.