Honolulu police spokesman Capt. Frank Fujii described the killing as "very well planned, very well executed" in a news conference today announcing the decision to seek a waiver.

The medical examiner's office said today the woman's identity has not been confirmed, but neighbors said she is Karen Ertell.

Ertell's body was discovered Friday at her 'Ewa Beach home on Akua Street after family and co-workers called police when she failed to show up for work.

Ertell was owner of Koko Crater Coffee roasters in Kaka'ako.

Fujii said an autopsy today determined Ertell was strangled, and that manner of death was homicide. Prosecutors will seek to charge the boy as an adult with murder, robbery, burglary, auto theft and other offenses, Fujii said.

The boy was arrested at about 10 p.m. yesterday at his home after his father called police to turn in his son, Fujii said.