Dana Bennet was kidnapped, murdered but not raped, police said on Tuesday after a gag order on the details of the case had been lifted.
The suspects in the murder are 32-year-old Radwan Farhan from Kfar Hamam and his wife. Farhan is also suspected of murdering three other people.
Bennet, an 16-year-old Israeli-American girl, vanished after finishing a work shift at a Tiberias restaurant six years ago. Last week, police announced that her body had been located after a break in the case.