Police are looking for a cyclist involved in a collision with a child at Casey Market Town on Saturday.  

They say that at about 8pm, the young child sustained a significant injury to his leg when he was struck by a cyclist riding on the footpath outside the Casey Jones pub.

The cyclist was wearing a blue T-shirt, black pants, black shoes, a grey helmet and carrying a backpack.

Anyone who can identify the man should call 1800 333000, or via the Crime Stoppers ACT website.