Police have said the children were aged one, two, three, six and eight.
The bodies of five children have been found in an apartment in a German city.
Officers said their mother, a 27-year-old, is a suspect.
She jumped in front of a train in Dusseldorf and was taken to a hospital with injuries, they added.
The girls were aged one, two and three, while the two boys were aged six and eight. The mother’s sixth child, an 11-year-old boy, survived.
Emergency services are still at the scene, in the Hasseldelle area of the city, with images published by local press showing three ambulances outside a block of flats.
The cause of death has not been confirmed yet.
Authorities in nearby Wuppertal are investigating.
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