CCTV images have been released of men police would like to speak to after two cameras were stolen in The Maltings.
Hertfordshire Constabulary said the incident took place in Jessops on Monday, July 28, at about 12.15pm.
As part of the investigation, officers have released images of three men, who it is believed may have links with the Borehamwood or North London areas, as they would like to speak to them in connection with the incident.
PC Shaun Woods, from the St Albans Safer Neighbourhood Team, said: "I am keen to speak to the three men pictured as they may have been in Jessops at the time of the incident and have information that can help our investigation.
"I would urge anyone who recognises them to get in touch with the St Albans Safer Neighbourhood Team as soon as possible."
Anyone with any information in relation to this incident should contact PC Woods via the police non-emergency number 101, quoting crime reference F1/14/2449. Alternatively call Crimestoppers anonymously on 0800 555 111.