A 16-year-old girl was allegedly sexually assaulted on the middle- and high-school campus of Lusher Charter School, New Orleans police said.

The incident was reported about 9:30 p.m. Thursday in the 5600 block of Freret Street, where Lusher’s campus is located, according to a daily crime log. It was not immediately clear if that is when the assault is alleged to have occurred as well.

Officer Hilal Williams, a Police Department spokeswoman, said the victim was assaulted by an “unknown male” on the school grounds.

Lusher CEO Kathy Riedlinger said Friday afternoon that police have not contacted her or other school officials about any incident on the campus and she had received no reports of anything taking place at the school.

Police did not immediately have a description of the assailant. The investigation is ongoing, Williams said.