Police investigating a bus crash on a country road which left one man dead, want to speak to three men who may have vital information.
One coach hit a tree, the other slid across the road
Two coaches were heading for Malton Bacon Factory when they were involved in a crash in icy conditions on the B1248 near Wetwang.
Officers believe the men, who were in a white van, arrived on the scene after the accident at 0530 GMT on 27 January.
Investigators are trying to piece together events leading to the crash.
Coach driver Kevin Wilkinson, 27, of Strathmore Avenue, Hull, died after the Volvo single-deck 53-seat coach in the icy conditions.
The second coach,which was following Mr wilkinson's vehicle, crashed while taking avoiding action.
The second driver, a 53-year-old Hull man suffered leg injuries, but had still tried to provide first-aid for Mr Wilkinson.
Hull Royal Infirmary treated 10 people from the crash for minor injuries after the incident.
Both coaches were travelling from Hull on a regular run to the bacon company.
The first coach, operated by Jim Bell Travel, was carrying 36 Czech workers when it hit a tree.
The second bus, operated by East Yorkshire Motor Services, had nine Portuguese workers on board.
Inspector Steve Anderson, of Humberside Police, had said when he arrived on the scene at 0600 GMT the road "was like a sheet of ice".