Youngsters are being warned about the dangers of "free running" across rooftops.
Sussex Police has received a number of reports of youngsters climbing onto buildings in and around Broad Street, Seaford, and leaping from one building to another.
PCSO Daniel Turk said: “Not only is this dangerous but it can cause damage to the buildings. We have already had one complaint of broken tiles in Church Lane and damage to a car, and we are concerned that somebody might fall and seriously hurt themselves or dislodge more tiles and masonry and injure somebody on the ground.
"We are keen to hear from anybody who knows the identity of those responsible so we can put a stop to it before somebody does get hurt or more damage is caused."
Anybody with any information is asked to contact police on 101 or email firstname.lastname@example.org quoting serial 1316 of 4/7.