Police are appealing for information after a reported assault at the Asda store in Blackwood on Monday, January 6.
The incident was reported at around 11.15am.
Police are looking for the man pictured, as they believe he may be able to help with enquiries.
Anyone with information can contact Gwent Police on 101, quoting log reference 2000005990.
Gwent Police can also be contacted through direct message on Facebook or Twitter.
Alternatively, Crimestoppers can be contacted anonymously on 0800 555 111.