Suspected Kidnapper Forced Teen to Smoke Meth, Court Documents Say

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A Hilo man accused of kidnapping a 15-year-old girl over the weekend forced her to smoke methamphetamine out of pipe while driving on Daniel K. Inouye Highway Friday afternoon and shackled her overnight in a school bus, according to a probable cause document filed in Hilo District Court in East Hawai’i Tuesday.

Fifty-two-year-old Duncan Kealoha Mahi appeared Tuesday before District Court Judge Jeffrey Hawk, who maintained Mahi’s $2 million bail on charges of robbery, kidnapping, sexual assault, terroristic threatening and meth trafficking.

Mahi is scheduled to appear in Kona District Court in West Hawai’i for a preliminary hearing on Wednesday.

The probable cause statement detailed the teen’s abduction on Friday from Anaehoʻomalu Bay, crimes committed against her while in the captivity, and her escape the following day.

According to the statement, Mahi approached the girl, identified in the document as MD, and her boyfriend while at the Waikōloa beach and demanded money and their phones.


When the boyfriend initially refused to comply, Mahi grabbed the girl and held a three-inch blade to her throat. At that point, Mahi forced the girl to Ziptie and tape her boyfriend’s ankles and wrists. She then was forced to shove her boyfriend’s shirt in his mouth, tape it, then put a towel over his head and tape that, too.

The girl said she feared for her life and did as Mahi demanded. The 52-year-old also threatened to stab the boy in the leg when she questioned him.

Mahi left the beach with the teen girl and broke the phones. Two MAILE Amber Alerts were issued following the girl’s abduction.

While driving on the new Saddle Road, MD was forced to smoke methamphetamine and the Hilo man assaulted her.


The document indicate Mahi took the victim to his property and shackled her left ankle with a cuff in a yellow bus behind the main house, allowing her only 3.5 feet of movement. According to the statement, MD described the shackle as a brown fabric cuff with a bunch of little brackets attached to it.

“Mahi used pliers to make it tighter so MD couldn’t get it off,” the document alleges.

The next day, the teen convinced Mahi to take her to Cafe Pesto for food. While there, MD wrestled her way free from Mahi’s clutches. Witness Matthew C. Hileman said he saw the scuffle between the two.

“Hileman stated the male was on top of the female as the female went between the male’s legs and ran in the opposite direction,” the court document states.


Hileman told police Mahi tried to chase after her but stopped him. Mahi reportedly said: “That’s my daughter, what the f– you doing? Get out of my way!”

It was a homeless man sitting nearby the confrontation that informed Hileman the girl who escaped was “the girl from the news.”

Mahi ran from the scene shortly after that, but was apprehended by police the same afternoon. The 15-year-old and Hileman were shown a lineup of suspect photos and both pointed to Mahi as her abductor.

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