The medical examiner's office today identified the man as Jesse M. Mori.

Police vehicular homicide investigators said Mori was operating a 2002 Honda motorcycle southbound on Keahole Street, 261 feet north of Kalaniana'ole Highway, that crashed into a tree after hitting a curb at 1:30 a.m. Mori was thrown from the motorcycle. He was not wearing a helmet, according to police.

Investigators said speed and alcohol appear to be factors in the crash.

The death is O'ahu's 44th traffic fatality of the year.

Since May 14, a motorcycle passenger and two operators have accounted for three of O'ahu's past five fatalities.