The van driver, a 25-year-old man from Leyland, was arrested a short time later and taken into custody where he remains under arrest this morning. Police said enquiries remain at a "relatively early stage" and they are appealing for witnesses.
Det Chief Inspector Zoe Russo, of Lancashire’s Force Major Investigation Team, said: “While we have made an arrest, our enquiries are very much ongoing and so I would appeal to anyone who witnessed what happened or who has CCTV or dashcam footage which may have captured the incident to come forward and contact us."