Bedfordshire Police is appealing for witnesses after a taxi driver was assaulted inLyndhurst Road, Luton, on Monday (16 February) at around 7.15pm.
The offenders are described as a group of Asian men in their early 20s who made off down Ashburnham Road.
Officers would like to speak to anyone that may have seen a commotion or a group of men fleeing the area.
Anyone with information is asked to contact police on 101, text information to 07786 200011 or call Crimestoppers, anonymously, on 0800 555111.