A man has been arrested for interfering with parked cars.
Officers were called to Church Road, Hastings, shortly after 2am on May 30 after a man was seen trying to open car doors.
A 30-year-old man from Hastings was arrested on suspicion of interfering with vehicles. He was questioned before being released on bail until July 7 while officers carry out further inquiries.
Investigator George Szczotok said: "We need to speak to anyone who was in the area and saw a man behaving suspiciously around vehicles.
"Also, if someone broke into your car or something was stolen from your vehicle while it was left insecure in Church Road, please contact us."
Anyone with information should call 101 quoting serial 120 of 30/5, email firstname.lastname@example.org or call the independent charity Crimestoppers anonymously on 0800 555111.