British banker's torture video stuns jury in Hong Kong murder trial

(Refiles to fix victim's name, paragraph 18, name of singer and song, paragraph 22)

* Rurik Jutting accused of murdering two young Indonesian women

* Jury endures 20 minutes torture and killing video

* Jutting talks of fantasy to kidnap British schoolgirls

* Calls his video monologues "narcissistic ramblings"

By Farah Master

HONG KONG, Oct 25 (Reuters) - Filming himself torturing and killing a young Indonesian woman, British investment banker Rurik Jutting veered between boasting, remorse and describing the pleasure he derived from sexually brutalising the first of two victims.

Footage taken from four hours of recordings on Jutting's mobile phone formed the core of the prosecution opening on the second day of a murder trial in Hong Kong that has grabbed global attention.

The 31-year-old Cambridge University graduate has admitted killing Sumarti Ningsih, a 23-year-old single mother, and another Indonesian woman, Seneng Mujiasih, in his luxury high-rise apartment two years ago.

But he has pleaded not guilty to murder on grounds of "diminished responsibility", while pleading guilty to the lesser crime of manslaughter.

The four women and five men on the jury clenched their jaws and, at times, diverted their eyes as they endured an opening 20-minute segment of the torture of Ningsih. Tears welled up in the eyes of one middle aged male juror.

Appearing topless, overweight and unshaven, Jutting appeared on camera, at times showing Ningsih's body, and spoke with chilling calm in a series of monologues that he described as "narcissistic ramblings".

While the video was not shown to the public in the courtroom, journalists covering the trial could hear the audio.

"I just killed someone, first person I ever killed, I cut her throat in the bathroom ... to be precise I cut her throat while she was bending over licking dirty toilet bowl," he said.

Jutting, who had held a high flying job at Bank of America in Hong Kong before his arrest, at one point filmed himself taking cocaine as he explained how he tortured Ningsih.

"I treated her as a non person, a sex object. And that turned me on."

Bespectacled and wearing pale blue shirt, Jutting was flanked by three policemen as he watched what he had done on a video recording a judge said had been found on his iPhone.

Jutting, who had attended Winchester College, one of Britain's most prestigious private schools, shut his eyes, sometimes covering his face with his hand rather than look at the screen in front of him.

BRITISH SCHOOLGIRLS

Jutting used a belt, sex toys, a pair of pliers and his fists to torture Ningsih over three days before eventually slitting her throat with a serrated-edged knife, according to the prosecution.