Excessive speed was a factor in a double fatal crash that killed a motorcyclist and a pedestrian Saturday in Hilo, Hawaii island police said.

Police identified the motorcyclist as 66-year-old Lionel Chartrand, of Hilo. The woman’s name was being withheld pending positive identification and notification of next of kin.

Police said at about 7:25 p.m. the woman had exited a vehicle near the intersection of Railroad Avenue and Makalika Street and was walking in the north-bound lane after the vehicle left when she was struck by the motorcycle. She was taken to Hilo Medical Center where she died at 10:55 p.m.

Chartrand was heading north-bound on Railroad Avenue and not wearing a helmet at the time of the crash. He was taken to Hilo Medical Center where he died at 10:52 p.m.

Police ordered autopsies and opened a negligent homicide investigation.

Officers would like to question the occupants of the vehicle in which the woman had been riding.

Anyone with information about the case is asked to call Officer Erhard Autrata at 961-8113 or email him at erhard.autrata@hawaiicounty.gov. Anonymous tips can be made by calling Crime Stoppers at 961-8300.

The traffic fatalities were the Big Island’s 18th and 19th this year compared to 15 at this time last year.