Police have released a CCTV image of a man they would like to speak to following a common assault that happened on a bus travelling through St Albans from Watford.

A teenager was on the 321 Arriva bus from Watford to Luton on Monday, May 20 when, sometime between 4.30pm and 4.40pm, when a man who sat behind her kicked the back of her chair and grabbed her hair, causing pain.

Frightened by the incident, she got off the bus in St Peter's Street and reported it to police.

PC David Vass, who is investigating, said: "We believe the man pictured may have been in the area at the time and could have important information for us."

If you recognise him, or you are the man pictured, email david.vass@herts.police.uk quoting crime reference 41/40086/24.

You can also report information online at herts.police.uk/report, speak to an operator in the Force Communications Room via the online web chat at herts.police.uk/contact or call the non-emergency number 101.

Alternatively, you can stay anonymous by contacting the independent charity Crimestoppers on 0800 555 111 or via their untraceable online form at crimestoppers-uk.org.