Police have named a woman who died after falling from a moving van as Leah Senior.
The 27-year-old from Kirklees died from her injuries following the incident in Wakefield, West Yorkshire, on Wednesday night.
She was seen falling from the white Transit van between 8.20pm and 8.40pm, West Yorkshire Police said.
Anyone who was on or near Denby Dale Road or Hollin Lane at that time should contact police with any relevant information, they added.
A 25-year-old man has since been arrested and bailed on suspicion of causing death by dangerous driving and drug driving offences.