HONOLULU - New developments have surfaced on the corruption case involving former Honolulu Police Chief Louis Kealoha and his wife, former Deputy Prosecutor Katherine Kealoha.

Recently KITV4 discovered City Prosecutor Keith Kaneshiro is reportedly under federal investigation. Our partners at Honolulu Civil Beat say his office has received target letters from the Justice Department over corruption and abuse of power.

Now, the federal investigation is focusing on the Big Island, and Katherine Kealoha's brother Rudolph Puana.

The Civil Beat article states that prosecutors issued a grand jury subpoena to Puana's ex wife who owns Big Island Pain Center -- previously known as Puana Pain, LLC, when Rudolph Puana used to co-own the company with his ex wife.

The investigators are seeking records from the clinic.