Burglars stole more than £2,000 worth of cigarettes, cash from a till, and parcels belonging to customers in a raid on an Uckfield High Street shop overnight on Monday.
Police were alerted by a postman who found the door of KC News ajar at about 3.30am.
Owner Kevin Comar was called in at 5.30am after an employee was greeted by police on the doorstep.
The newsagent’s was open yesterday but Mr Comar was wearing gloves to serve customers while he waited for a forensic team to arrive.
He said police had already told him High Street CCTV wasn’t working and so the break-in wouldn’t have been recorded outside the shop.
He hadn’t been able to check his own CCTV because he had been told not to touch anything until the forensic team had completed their work.
He is hoping somebody will have seen something suspicious during the night because the burglars got in through the front of the shop.
“I feel very shaken up at the moment,” he told Uckfield News.