Following enquiries, we believe that a vehicle may have driven around the man, who was in the road prior to the collision.
We would like to speak to the driver of that vehicle, solely as a witness, to assist our enquiries.
We're appealing for footage of the grey Ford Transit van between 11pm and 1am.
Following consultation with the Crown Prosecution Service, Liam Slack, 34, of Langton Brow, Eccleston, has been charged with manslaughter.