Police in Watford, England, were appealing for information on May 18 as they released CCTV from April 13 showing “purse dipping” in a shopping mall.

The footage, filmed inside an H&M store, shows a suspect unzipping a woman’s backpack, using a T-shirt to conceal their hand. The suspect then reaches inside the bag, before walking away.

Police said the woman’s purse and mobile phone were taken.