Police are investigating claims that prostitutes are running a brothel in university halls.
The University of Sussex has told police a single bedroom flat in the halls at Falmer, Brighton, is advertised in an online escort site offering sexual services by single girls or two together.
Police raided the flat and interviewed a woman but disclosed no evidence of any criminal offence was found.
The university and police said a woman named Sylvy, aged 21, posted two advertisements online who said: “Come now to University of Sussex in Falmer. Easy to park”
The other advertisement mentioned Rosie, 37, telling prospective customers she was at "side of University of Sussex in Falmer-Brighton".
Sussex Police agreed they called on a flat in the halls after security staff at the halls contacted them.
“A woman in her twenties who is not a student or university employee was there. There is no evidence of any criminal offence being committed,” said a spokesman.
The university has launched an inquiry to decide what to do about the incident and whether action should be taken against the flat’s tenant.
"The university campus is a safe and secure environment, and we are very concerned by the allegation that one of our one-bedroom flats on campus has been used as a brothel,” said a spokesman.
"There is no suggestion that any student here was working as a prostitute. We have immediately referred the matter to the police since it is potentially a criminal matter.
"As far as we are aware, this is the first time that any such allegation has been made in relation to university.”