A bus passenger has died after hitting her head as the vehicle was forced to brake suddenly.
The bus was forced to brake sharply, causing the woman to seriously injure her head.
She was taken to hospital where she later died.
Her next of kin have been informed.
The van did not stop at the scene but the driver has since been found, police said.
Anyone who saw the incident take place on Borough Road shortly after 1pm on Saturday is asked to message @MerPolCC on Twitter, call 101 or the roads policing unit on 0151 777 5747 quoting log number 438 of 22 February.