The Honolulu Medical Examiner identified a 40-year-old man killed in a pedestrian accident in Nanakuli Saturday as 40-year-Byron Ching, of Waianae.

Ching died of “multiple internal injuries” from the crash, the Medical Examiner said.

 Police arrested a 30-year-old Waianae woman Saturday for investigation of negligent homicide in connection with the crash.

The woman drove a 2005 Chevy sports utility vehicle that veered off Farrington Highway and killed Ching, who was walking on a Nanakuli sidewalk at 4:15 a.m. Saturday.

Police were investigating whether alcohol and speed were factors in the accident.

The driver and a 21-year-old man also in the vehicle were taken to the Queen’s Medical Center in serious condition. The woman was released; the man was in stable condition, police said.

Forty-five people have died on Oahu roads this year, compared to 41 at this time last year.