Mariah Carey's Sister Arrested in Undercover Bust Alison Carey charged with prostitution By Newser Editors, Newser Staff Posted Aug 28, 2016 2:43 PM CDT 64 comments Comments Alison Carey. (Saugerties PD) (Newser) – An undercover bust at a hotel in a small Upstate New York town would be unremarkable, if not for the woman arrested: Mariah Carey's older sister. The Daily Freeman reports Alison Carey was arrested Friday on prostitution charges in Saugerties, which is home to about 20,000 residents. The 55-year-old had allegedly posted three ads online promising a "world of pleasure"; Saugerties Police Chief Joseph Sinagra said Alison Carey had been operating out of an unnamed hotel for roughly a week and was busted by an undercover officer who pretended to be seeking her services. Sinagra says sister Mariah's name surfaced because Alison Carey dropped it upon her arrest, and the connection was verified via Internet search. The Times Herald-Record cites "numerous" reports since 2015 that suggest Alison Carey is HIV-positive; those who had a sexual encounter with her are being advised to visit their doctor. US Weekly reports the sisters have been estranged for some time; they have a third sibling, brother Morgan Carey. Alison Carey has a Tuesday court date.