TOPEKA, Kan. (AP) — A private prison company once hid its practice of triple-bunking in two-person cells at a federal detention center in Kansas before a national group's inspection and was slow to address understaffing, according to a federal audit released Tuesday.

The report from the Justice Department's inspector general also said the U.S. Marshals Service failed to adequately oversee its Leavenworth Detention Center. The audit suggested oversight problems could exist beyond the northeastern Kansas prison.

The 1,033 bed center operated by CoreCivic Inc., based in Nashville, mainly houses d...