A man has died after being involved in a snowball fight.
North Wales Police said officers were called to a home at Clos-y-Berllan in Rhuddlan on Thursday morning.
The man - whose age and identity are unknown - died of his injuries in hospital.
A man was arrested and is being questioned, a police spokeswoman said.
She could not confirm local reports that the victim had been stabbed.
"Police were called at 10.30am to reports that a man had been seriously injured. He was taken to hospital by ambulance where he died of his injuries," she said.