A man has died at a property in Huddersfield and another man has been arrested in connection with his death.
Yorkshire Ambulance Service contacted police at around 12.13pm after paramedics attended an address in Wain Brow, Huddersfield.
A man was found inside the property and was confirmed dead a short time later.
A 42-year-old man has been arrested on suspicion of administering a noxious substance causing death and remains in police custody.
The circumstances surrounding the death are currently under investigation.
Police have not released further details about the deceased man or the circumstances leading up to the incident.
