The 48-year-old appeared in Napier District Court yesterday morning and pleaded guilty to five counts of sexual assault against two girls aged 16 and younger at the time of the offending.
King had previously held name suppression for the five charges after a jury found him guilty last month of eight sex charges relating to the indecent and sexual assault of four woman, aged between 15 and 57, in the back of his ambulance between January 2010 and June 2013. King began his career with St John as a volunteer in 2007, and started working full time in 2009, before resigning in August last year following the string of accusations.
His five charges against the two girls took place between 2002 and 2006 at several locations, court documents said.
While working at a mechanics workshop on the outskirts of Hastings, King would molest one of the young girls in the meal room of the garage, while similar crimes would take place at another company building in Onekawa and at a residential property. During the sexual assaults King would say: "This won't take long."
Court documents also revealed that the second girl, who was violated by King in a similar way, heard during one attack "a clicking noise like the sound of a camera shutter".
The girl recalled seeing King then place his cellphone in a pouch on his belt.
During King's trial last month an expert witness discovered the "digital footprints" of two videos on the ambulance officer's cellphone after he sexually assaulted and made intimate recordings of a 15-year-old female patient.
Police found King had used his Samsung Galaxy S3 to record the teen while he stopped the ambulance on the side of the road near Waipawa, while transporting the girl to a medical centre in Waipukurau.
A second video was also created on King's phone outside the medical centre just minutes before the teenager fled from the rear of the ambulance and burst through the front doors of the centre to the astonishment of medical staff.
King was remanded in custody and will be sentenced for all matters on December 18.
By Sam Hurley of Hawke's Bay Today
