Bio

Kirk Matthew Lankford was born in 1985. He was an American living in Hawaii at the time of the crime. Before the murder case, Lankford worked as a pest-control technician for Hauoli Termite & Pest Control. His job took him to different homes around Oʻahu, including the Pūpūkea area.

On April 12, 2007, Lankford was working in Pūpūkea after finishing a service call. That same morning, 21-year-old Japanese tourist Masumi Watanabe was walking in the same area after being dropped off by a relative.

Lankford was married at the time. Some later court proceedings included information about his personal life, but the most important confirmed facts are about his work, his truck, and his connection to the area where Watanabe disappeared.

His case became highly reported because Watanabe’s body was never found, and prosecutors had to prove the murder using witness statements, blood evidence, items found in Lankford’s truck, and his changing explanations.

Murder Story

On April 12, 2007, Masumi Watanabe was staying with relatives in Hawaii. That morning, a relative dropped her off on lower Pūpūkea Road at about 9:15 a.m. so she could take her usual walk home. She was a 21-year-old visitor from Japan and was known to take that walk regularly.

At around the same time, Kirk Matthew Lankford was in the area working as a pest-control technician. Two witnesses later testified that they saw Watanabe on Pūpūkea Road between about 9:20 a.m. and 9:40 a.m. with a man who resembled Lankford near a white work truck. One witness said Watanabe looked distressed and appeared to be saying “no.” Another witness said the truck had Lankford’s employer’s name on it and saw Watanabe get into the truck from the driver’s side.

Watanabe never returned home. Her disappearance led to a major search and investigation. Police later focused on Lankford after learning that she had been seen near his work truck. Investigators found Watanabe’s blood and glasses inside Lankford’s work truck. Court records later listed this evidence as part of the proof supporting the jury’s verdict.

At first, Lankford denied ever seeing Watanabe. He later admitted that he had been involved in her death and had disposed of her body. His explanation was that he had accidentally struck her with his truck, then offered her a ride. He claimed that while he was driving her through the neighborhood to find her home, she jumped out of the moving truck, hit her head on a rock, and died. He said he then disposed of her body because he panicked and feared losing his job. Court records note that the State argued Watanabe was murdered, while Lankford claimed she died after jumping from his truck.

Because Watanabe’s body was never recovered, no autopsy could determine the exact cause of death. Prosecutors argued that the evidence showed murder, not an accident. The jury could reasonably find that Lankford either intentionally hit Watanabe with his truck or attacked her inside the truck, causing life-threatening injuries. The appellate court later held that there was substantial evidence supporting the murder conviction.

Lankford was arrested on April 26, 2007, and charged with second-degree murder. He pleaded not guilty and went to trial in 2008. On April 14, 2008, an Oʻahu jury found him guilty of second-degree murder in Watanabe’s death.

On July 31, 2008, Circuit Judge Karl Sakamoto sentenced Lankford to life in prison with the possibility of parole. At sentencing, the judge called him “a predator.” Lankford continued to deny murdering Watanabe and said, “I did not kill Masumi Watanabe.” He admitted that his handling and disposal of her body was wrong, but he did not change his claim that her death was accidental.

Watanabe’s parents asked Lankford to reveal where their daughter’s remains were located. They stated that they did not believe his claim that he disposed of her body in the ocean. The family believed she had been buried somewhere on Oʻahu.

In April 2009, the Hawaii Paroling Authority set Lankford’s minimum term at 150 years before parole eligibility. The prosecution had sought a long minimum term, and Watanabe’s parents supported a lengthy sentence. The parole board’s decision meant Lankford would not realistically become eligible for release during a normal lifespan.

Lankford appealed his conviction. In 2011, the Hawaii Intermediate Court of Appeals affirmed the judgment of conviction and sentence. The appellate court found that the evidence was sufficient to support the jury’s verdict.