The incident happened close to the Feldon development in the Mill Road area.
Councillor Billy Webb said he is aware of the ongoing issues at the site and has been in contact with the housing association.
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He said: "While this work continues, I am very concerned at fresh reports of graffiti at a site that is meant to provide mixed social housing. Those behind this latest attempt at intimidation should be ashamed.
"Shared space must remain open, to ensure that all sections of society can have access on, and treatment to it without denying the ability of others to do likewise."
Councillor Nuala McAllister added: "Alliance will be requesting a meeting to try and move this issue along. Simply put we cannot tolerate those in our society whose main agenda is to mark out territory at whatever expense to others."
(CD)
