Eastbourne police are keen to reassure people living in Hampden Park that they are actively addressing anti-social behaviour in the former Veritek headquarters building.
PC Dan Toft, of the neighbourhood policing team, said, "Officers have been targeting this area for several weeks, paying particular attention to individuals known to cause problems.
"We're fully aware of local concerns and we want people to know that these are being taken seriously.
"We're also urging residents to report any incidents or crimes without delay so that they can be addressed."
Anyone witnessing anti-social behaviour is asked to report it online, email email@example.com or phone 101.
If a crime is in progress, please dial 999 and ask for police.