A constabulary serviceman "regretted" not sending serial slayer Stephen Port's laptop for investigation consecutive aft helium murdered his archetypal victim.
Det Con David Parish told an inquest since Anthony Walgate died successful June 2014, helium had been going implicit his actions regarding the computer.
Data yet showed Port had searched for cause rape videos soon earlier arranging to conscionable the student.
Stephen Port was jailed for beingness for the rape and execution of 4 men.
The inquest assemblage was told Port contacted Mr Walgate, offering him £800 for an overnight stay.
In different connection connected the FitLads website, earlier helium met Mr Walgate, Port bragged astir antecedently having had enactment with a antheral who was connected drugs and was similar "a ragdoll".
However, DC Parish did not spot the worldly and reported lone connected selfies, enactment videos and dating tract messages connected the laptop relating to Port's "lifestyle".
The constabulary serviceman apologised for his actions arsenic helium gave grounds astatine the inquest astatine Barking Town Hall successful eastbound London, yards from wherever Port fatally drugged 4 young men with GHB implicit a 16-month period.
The serviceman was asked by inquest jurors whether helium felt "personally liable for the failings".
"In presumption of the laptop - for the past seven-and-a-half years I privation I could person done that," helium said.
"And that is thing I person to woody with."
The hearings are looking astatine whether the victims' lives could person been saved had constabulary acted differently.
Mr Walgate, 23, Gabriel Kovari, 22, Daniel Whitworth, 21, and Jack Taylor, 25, were each recovered dormant adjacent Port's level successful Barking.
Port, present 46, was recovered blameworthy astatine the Old Bailey successful 2016 of the 4 murders and sentenced to a full beingness order.
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