Paramedics were called to an east London station after a woman gave birth on board a train.
The train stopped at Stratford International on Thursday evening while it waited for an ambulance crew to meet it there.
Southeastern said other services into London were unable to stop at the station while paramedics attended to the woman and her newborn.
“Congratulations to mother and child”, a spokesperson added.
NEW: London bound Trains are being delayed at #StratfordInternational after an ambulance has been called to a train following the birth of a new baby on board. London bound trains are unable to stop at the station until the ambulance arrives. Congratulations to mother & child.— Southeastern (@Se_Railway) November 8, 2018
The paramedics arrived at the station at around 9.30pm and took the mother and baby to a nearby hospital.
The train was able to continue its journey to St Pancras shortly after 10pm, with other trains on the line delayed as a result.
Thanks for the update, heard about the baby but hadn’t realised it was on my train home!!— Carys Williams (@carys_williams) November 8, 2018
Southeastern said: “London bound Trains are being delayed at Stratford International after an ambulance has been called to a train following the birth of a new baby on board.
"London bound trains are unable to stop at the station until the ambulance arrives. Congratulations to mother & child."
It added: “If your train is unable to stop at Stratford International while the ambulance crew welcome the new born to the world, you can change at St Pancras for the first train back to Stratford."