A man is thought to have assaulted a woman at a village Co-op shop.
The man reportedly entered the store on Redbourn High Street at around 9pm on Thursday, May 19.
He allegedly kissed a woman without her permission.
Hertfordshire Police are investigating the report of sexual assault, and officers have released a CCTV image of someone who they believe might know about the alleged incident.
Detective Constable Laura Bovington, who is investigating, said: "It is believed that the man pictured was in the area at the time and may be able to help us progress our investigation.
"If you recognise him, please get in touch."
She urged anybody with information to contact officers online (https://www.herts.police.uk/) or by phone on 101, quoting 41/40414/22.
Alternatively, 100 percent anonymous reports can be submitted to CrimeStoppers on 0800 555 111 or online: https://crimestoppers-uk.org/
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