HONOLULU (AP) — The city of Honolulu's chief legal officer received a target letter linked to an ongoing federal corruption investigation sparked by allegations a now-retired police chief and his former prosecutor wife framed a relative for stealing their home mailbox.

The target letter sent to Corporation Counsel Donna Leong is the latest development in the closely watched saga, which has already resulted in indictments against retired Chief Louis Kealoha and Katherine Kealoha, who had been a deputy Honolulu prosecuting attorney. Current and former police officers have also been charged.

Pros...