Immigration New Zealand is looking into allegations of migrant sex workers being at the premises of a central Wellington motel.
Deputy Head of Immigration New Zealand (INZ) Stephen Vaughan confirmed an investigation was under way.
He said they received information about activities at the Harbour City Motor Inn on three occasions between July 2018 and January 2020.
"In all cases, the complaints related to the possibility of migrant sex workers being at the premises.
"INZ took steps to assess these matters however at the time there was insufficient information to meet the threshold required for further investigation."