Sussex Police has arrested a man on suspicion of burglary, and another is still at large.
Officers on foot and a police helicopter were searching for two men after a burglary in Victoria Drive, Eastbourne.
The call came in at 2.30pm to a report of two men acting suspiciously in the area.
Just before 3.30pm, a 21-year-old man from Romford, Essex, was arrested on suspicion of burglary.
Another suspect remains at large.