A police spokesperson said: “Officers investigating the death of a six-week-old boy in Southampton have arrested two people.
“Police were called at 5.05am on Sunday to an address in Defender Road, Southampton, along with South Central Ambulance Service following reports that a child was in need of medical attention.
“The baby was taken to Southampton General Hospital where he was pronounced dead a short time later.
“Inquiries into the circumstances are ongoing.
“An 18-year-old woman and 16-year-old boy, both from Southampton, have been arrested in connection with the incident.
“They remain in custody at this time and are assisting police with their inquiries.”
Detectives have conducted door-to-door enquiries as part of their investigations.