Kealoha âMailbox Caseâ co-conspirator asks to remain free while he pursues appeal Derek Hahn (Source: None) By Lynn Kawano | May 12, 2021 at 2:10 PM HST - Updated May 12 at 4:03 PM HONOLULU, Hawaii (HawaiiNewsNow) - Just weeks away from his June 1 date to self-surrender at a mainland prison, Kealoha mailbox co-conspirator Derek Hahn wants a judge to let him stay in Hawaii. Hahn, a former Honolulu police lieutenant, is supposed to report to a federal prison facility in Oregon. But Hahnâs attorney filed a motion Wednesday asking that he remain free until his appeal is complete. Hahn was convicted of obstruction of justice and conspiracy in June 2019. And in December, he was sentenced to 42 months in prison for his role in the conspiracy.