A man and child are dead after a pram carrying two children rolled onto train tracks in Sydney’s south.

Emergency services were called to Carlton railway station at 12.25pm on Sunday following reports the pram had rolled from the platform.

A 2-year-old girl and a 40-year-old man died at the scene.

A second 2-year-old girl and a 39-year-old woman were not injured.

NSW Police said the incident was not believed to be suspicious, but a crime scene has been established.

Members of the public were urged to avoid the area and buses will replace trains for some time.

A report is being prepared for the coroner.