Four people were taken to hospital – one with serious injuries - following a multi-vehicle crash on the A55 in Flintshire yesterday afternoon (Saturday, August 9). A 58-year-old man was arrested and North Wales Police (NWP) are now appealing for dashcam footage. The force was alerted to the incident near Pentre Halkyn at 3.21pm. An artic lorry travelling in the eastbound carriageway had collided with two vehicles travelling in the opposite carriageway. A major incident was declared and a Wales Air Ambulance was called from Welshpool. This airlifted one person across the border to Royal Stoke University Hospital. Another was taken to Stoke in a land ambulance. Two more were taken to Ysbyty Glan Clwyd, Bodelwyddan, by ambulance. The 58-year-old lorry driver was arrested on suspicion of causing serious injury by dangerous driving. He has since been released under investigation whilst inquiries continue. The A55 remained closed in both directions for several hours while officers from the NWP Forensic Collision Investigation Unit carried out initial investigations. The dual carriageway was finally opened just before midnight but only for one lane in both directions, to allow barrier repairs to take place. A 40mph speed restriction is now in place. Traffic Wales has warned of "long delays throughout the day". Join the North Wales Live WhatsApp community group where you can get the latest stories delivered straight to your phone Sgt Danielle Ashley of the NWP Roads Crime Unit is appealing for witnesses. She said: “We’d like to thank all those who have already provided us with their details following yesterday’s collision. "However we are urging anybody who may have witnessed the collision, or who may have dash cam footage just prior to the collision taking place, to contact us as soon as possible. “I’d also like to thank motorists for their patience whilst we dealt with this incident. One lane in each carriageway has since re-opened whilst repairs are carried out on the central reservation. "Motorists are advised to follow Traffig Cymru Gogledd a Chanolbarth Traffic Wales North & Mid for updates.” Sign up for the North Wales Live newsletter sent twice daily to your inbox Anybody with information is asked to contact officers at the Serious Collision Investigation Unit via the NWP website or by calling 101, quoting reference number 25000657103. Find out what's happening on the roads near you