A post-mortem examination was due to be carried out today on a five-month-old baby caught up in a dramatic crash between an ambulance and a lorry.
Paramedics had been desperately trying to resuscitate the baby girl when the ambulance she was travelling in was involved in the smash on the M1 near Broadway in Belfast.
A Good Samaritan motorist who stopped at the scene of the accident rushed the infant to the nearby Royal Victoria Hospital while another paramedic, who had not been injured in the collision, administered CPR.
The baby's death is not thought to have been linked to the road accident.
A spokesman for the Northern Ireland Ambulance Service said efforts to revive the child had not been interrupted.
He said: "A Northern Ireland Ambulance Service Intermediate Care Crew was this morning flagged down on Kennedy Way and asked to help with an infant who had stopped breathing.
"The crew took the child on board the ambulance and immediately commenced CPR.
"En route to the hospital the ambulance was involved in a collision with another vehicle and was unable to continue the journey," he continued.
"A passing motorist stopped to offer assistance and transported the ambulance staff and patient the short remaining distance to the Royal Belfast Hospital for Sick Children.
"CPR was uninterrupted during this time and the child was transferred into the care of the medical staff at the hospital."
Three other people were also hurt during the smash including the ambulance driver who sustained head injuries.
All three people were taken to the RVH where their condition last night was described as stable.
The accident caused major delays for drivers headed into Belfast on Stockman's Lane and the PSNI urged motorists to avoid the area if possible.
Anyone who witnessed the accident was asked to contact police with information on 0845 600 8000.