The Hawaii State Coalition Against Domestic Violence is holding a silent march at 5:30 p.m. today at the State Capitol in honor of the family killed last week in a murder/suicide.

The bodies of Grineline "Elaine" James, 39, and her 7-year-old son Michael James II, were found in their Mililani Mauka home on Wednesday, as was the body of Michael James, 42, who police believe hanged himself after murdering his wife and son.

Autopsies determined Grineline James died from asphyxia due to strangulation and her son died from asphyxia due to drowning. Blunt force trauma to the head was listed as "other significant injuries" for both victims, according to the city medical examiner's office.

Police believe Grineline was killed sometime last weekend and the son was killed a few days after his mother.

Investigators made the determination based on a letter and notes found at the scene, police said.