Excerpt: A FETISH-OBSESSED security guard - who put on a rubber diving suit and mask while working a night-shift - died during a bizarre sex ritual in toilets at his office.

Ralph Santiago was discovered collapsed in the men's lavatory following a seedy sex session that involved watching internet porn and sniffing toxic vapours.

Shocked colleagues raised the alarm after turning up for work early in the morning and finding the lifeless guard dressed in the tight latex suit and diving mask.

Police analysis of his laptop showed the oddball had been surfing fetish-themed websites alone in the toilets while he was supposed to be on duty.

Speaking at the inquest...