Two restaurants in Seaford were targeted by burglars in 24 hours last week.
Sussex Police are warning the owners of commercial premises, particularly restaurants, to be on their guard.
Between 12.30am and 10am on Thursday May 30 an attempt was made to force open a back door at the Shah Jahan restaurant in the High Street.
Entry was not gained and the lock to the door held despite being bent back.
The next day, Friday May 31, the New Dynasty Restaurant in Claremont Road was burgled between 12.05am and 8.30am.
Again a rear door was attacked and this time entry was gained and a small amount of cash stolen from the till.
Police are appealing for witnesses, particularly from any local residents who may have been woken up the noise of the doors being forced.
PCSO Cathy Clarke said: “Most commercial premises and restaurants do not leave cash on the premises overnight and I am visiting all those in the town centre to make sure that they do not.
“If you live in the town centre and hear or see anything suspicious overnight contact the police using the emergency number or if you have any other information let us know using the 101 number.”
Any information about the burglary and attempted burglary ring 101 quoting serial 0343 of 31/5.