A constabulary sergeant killed connected a railway enactment aft trying to prevention a distressed antheral was "everything you privation successful an officer", a erstwhile workfellow has said.
Sgt Graham Saville died connected Tuesday aft helium was deed portion responding to concerns implicit a man's safety successful Balderton, adjacent Newark, connected Thursday.
Insp Simon Riley said his erstwhile workfellow was a "caring, compassionate, strong, determined" officer.
Another man, 29, remained successful infirmary connected Tuesday aft suffering non life-threatening electrocution injuries.
Flags person been lowered to half-mast astatine constabulary stations crossed Nottinghamshire successful tribute to Sgt Saville.
Insp Simon Riley, seat of Nottinghamshire Police Federation, said helium worked alongside Sgt Saville successful Nottingham.
"It's just to accidental that it's perfectly devastated the unit - from everyone who we've spoken and everyone who has contacted us. Everyone is profoundly saddened [by the news]," helium told BBC Radio Four's Today programme.
"Graham was an serviceman nether my bid a fewer years agone erstwhile I was a effect inspector successful the city.
"He was everything you would privation successful a constabulary officer. He was caring, compassionate, strong, determined and mostly an all-round bully nonrecreational constabulary officer.
"[The antheral successful distress survived] which is testament to the actions of Graham Saville past Thursday evening."
Insp Riley said different constabulary officers who arrived astatine the country and witnessed the incidental earlier giving archetypal assistance to the men had been receiving support.
"It's indicative of the dangers that our members enactment themselves successful - day-in, day-out, shift-in, shift-out - successful bid to support the public," helium said.
"There were so a fig of colleagues present; unfortunately, they did witnesser the incidental and we person been providing enactment to them arsenic you tin astir apt recognize it has been precise traumatic to them."
Insp Riley added: "The types of incidents that our members are called to are precise often precise dynamic, fast-paced and our members are expected to marque decisions precise rapidly connected the hoof.
"I'm definite successful owed people of the probe determination whitethorn beryllium things that we request to consider, determination whitethorn beryllium lessons that whitethorn request to beryllium learned, but it's excessively aboriginal to beryllium discussing those astatine the minute."
Nottinghamshire Police Chief Constable Kate Meynell paid tribute to Sgt Saville, who she said was a "hugely respected and fashionable colleague".
She added: "Our hearts and deepest condolences spell retired to his household and we volition bash everything we tin to enactment them done this unimaginably devastating time.
"It is intolerable to enactment into words however devastating this quality is for everyone who loved and respected Graham. His work and sacrifice volition ne'er beryllium forgotten."
Floral tributes person been laid extracurricular Newark Police Station, wherever Sgt Saville worked arsenic a effect officer.
Prime Minister Rishi Sunak besides paid tribute to Sgt Saville and said his thoughts were with the officer's household and colleagues.
He added: "I'm saddened to larn of the passing of Sgt Saville.
"It is simply a testament to his bravery that helium died successful the enactment of work and a unspeakable reminder of the enactment the constabulary bash each time to support america safe."
Nottinghamshire Police said it was called to a residential country astatine astir 19:00 BST connected Thursday aft receiving reports astir a man's safety.
Sgt Saville died astatine the Queen's Medical Centre successful Nottingham 5 days aft helium was taken to the hospital.
BTP said its officers were continuing to analyse what happened.
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