Police are investigating a report filed by a 15-year-old girl who said she was forced into prostitution and held against her will beginning at 2 a.m. Monday in Waikiki.

The girl described the man who forced her into the activity as a "pimp" who appeared to be in his 30s. She said the man also sexually assaulted her in a room at an unspecified hotel.

Police were looking for the suspect. The case was classified as a first-degree sexual assault.