Police are investigating thefts from vehicles in the Sydney Road area of Eastbourne between 6pm and 6.30pm on Friday (13 June).
One suspect is described as a white man, aged 35 to 40, 5ft 8ins and of average build with short shaved light brown and grey hair.
He was wearing a dark navy blue polo shirt with a Burberry logo, black and white chequered shorts with a Nike logo and black and white trainers.
He may have been wearing glasses or sunglasses.
A 33-year-old man from Eastbourne has been arrested on suspicion of vehicle interference and theft.
He was questioned and bailed until Thursday July 31.
Any witness or anyone with information is asked to call 101 or email email@example.com quoting serial 1340 of 13/6.
Alternatively, call the independent charity Crimestoppers anonymously on 0800 555 111.