Hawaii island police have completed their investigation into the death of a witness in the Dana Ireland rape and murder trial — turning the case over to prosecutors as second-degree murder, police said Thursday.

The badly decomposed body of Shayne Yoshi Kalani Kobayashi, 38, of Pahoa was discovered Jan. 18, 2013, off the “ATV Trail Park” near Stainback Highway in Hilo. He was identified through dental records.

Kobayashi had been reported missing from his home Dec. 11, 2012.

Kobayashi was a witness in the 1999 murder trial that resulted in the convictions of Frank Pauline Jr. for the Christmas Eve 1991 kidnapping, rape and murder of Dana Ireland. Kobayashi testified he had been drinking with Pauline and brothers Ian and Shawn Schweitzer when Ireland rode by on a bicycle.

Police have not made any arrests in Kobayashi’s case.

Suspect in fatal Keehi harbor fight let go

Police have released a 39-year-old homeless man who was arrested last week following a fight at Keehi Boat Harbor where a 52-year-old man died, pending the outcome of tests being done by the Medical Examiner’s Office, police said Thursday.

The Medical Examiner’s Office identified the victim as Michael Sauer.

Police said Sauer was taken to a hospital after a fight at the harbor between noon and 1 p.m. March 17. Sauer died shortly after arriving at the hospital.

The suspect was arrested that same day at the Queen’s Medical Center on suspicion of manslaughter.

Police seek male in Moiliili robbery

Police are looking for a male suspect who robbed an 18-year-old man Thursday morning in Moiliili.

The suspect, armed with a dangerous instrument, threatened the man at 12:28 a.m. and took his property, police said.

The suspect then fled the scene.

Police have classified the crime as first-degree robbery.