Gardaí are renewing their appeal after a crash on the southside during the Easter weeked.
A 39-year-old male cyclist suffered serious injuries when he was struck by a lorry.
The incident happened at the junction of Grove Road and Harold's Cross Road shortly before 4 o'clock on the afternoon of Good Friday.
The truck was turning left onto Harold's Cross Road from Grove Road and the cyclist continued forward in the direction of Parnell Road.
The cyclist is still in a serious condition in St James Hospital following the crash. The driver of the truck was uninjured.
Gardai say CCTV shows there were a lot of people in the area at the time and they are asking these people to come forward to help establish what happened.
They're particularly interested in speaking with a male pedestrian who is seen on CCTV at the time of the collision.
This male was wearing a black leather jacket with blue jeans. Officers would also like to speak with the occupants of a small boxed refrigerated white truck which travelled directly behind the truck just before the crash happened.
Anyone with information is asked to contact Crumlin or Terenure Garda station.