Couple 'arrested in Peterborough after toddler dies with serious injuries' Girl, aged about two, taken to Peterborough City Hospital yesterday afternoon and died shortly afterwards Woman, 28, thought to be the toddler's mother, arrested on suspicion of causing or allowing the death of a child Man, 19, believed to be her boyfriend arrested on suspicion of murder Both are being held in custody in a police station in Peterborough Post-mortem to be carried out today to establish the cause of death A mother and her boyfriend have been arrested in connection with the death of a toddler after she was taken to hospital with serious injuries. Cambridgeshire Police are investigating the death of the girl, aged about two, at Peterborough City Hospital yesterday afternoon. They said the toddler was taken to the hospital at around 11am but died from her injuries two hours later. A 28-year-old woman, believed to be the girl's mother, and her 19-year-old boyfriend have been arrested and are being held in custody at a police station in Peterborough. Tragic: Police are investigating after a two-year-old girl suffering from serious injuries died at Peterborough City Hospital, pictured, yesterday. A woman, 28, and a man, 19, have been arrested The man is being held on suspicion of murder and the woman suspicion of causing or allowing the death of a child. A police spokesman said: 'We are investigating the sudden death of a child at Peterborough City Hospital yesterday afternoon. The child had been taken to hospital at 11am with serious injuries but died shortly before 1pm. 'A 19-year-old man and a 28-year-old woman have been arrested in connection with the child's death and are currently in custody at Thorpe Wood Police Station.' A Peterborough City Hospital spokeswoman confirmed today a child had died from serious injuries at the hospital. A post-mortem examination will be carried out today to establish the cause of death. This morning police and scenes of crime officers were outside a house in Yaxley, near Peterborough. A teddy bear had been left outside the front door in tribute to the girl. Residents living on the estate spoke of their shock on hearing the news. Speaking to The Peterborough Telegraph, one man said: 'I was walking my dog at about 10am yesterday when I saw and heard a woman crying. Police were there some time later, and have not left since.