A moped rider fell off her bike and suffered a broken knee after a white van pulled out in front of her.
It happened at around 7:45am on the St Lawrence main road, at the junction with Rue de la Ville Emphrie.
Police want to hear from anyone driving in the area at the time who may have dashcam footage of what happened.
Anyone with information is asked to call 612612 or Crimestoppers anonymously on 0800 555 111.
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