Police are hunting a woman on a mobility scooter who struck a grandmother and young child in Derry.
The incident occurred at William Street in Derry at about 11.30am on Thursday.
It is understood the woman and her grandson, who was in a pushchair, were knocked down on a footpath.
The PSNI has confirmed they are investigating and have appealed for information.
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Officers are keen to hear from a woman who helped at the scene.
Anyone with information is asked to contact police on the 101 non-emergency number.
Press Association