A police sergeant accused of failing to respond to a murder just metres away had previously lied about investigations and insulting colleagues and members of the public, it has been alleged.

Kirsten Treasure was on duty at Addington station on the night father-of-three Andrew Else, 52, died after being brutally stabbed more than 200 times by Ephraim Norman in nearby Selsdon Park Road in April 2014.

Almost a year after the killing it emerged Sgt Treasure had been placed on restricted duties over claims she and fellow sergeant Jason Chapman had ordered junior officers not to attend to reports of the attack - just 700m away - because they had other work to do.

The Metropolitan Police’s Directorate of Professional Standards passed a file on the case to prosecutors, who concluded neither should face criminal charges.

Sgt Chapman was found to have no case to answer following an internal police investigation, but Sgt Treasure was charged with gross misconduct and is due to appear before a police misconduct panel later this month.

RELATED: Widow calls for independent investigation into police 'too busy' to respond to Andrew Else's fatal stabbing in South Croydon

She is accused of ignoring the call to attend the scene of Mr Else's murder on April 24, 2014, as well as a string of other allegations in breach of the force’s professional behaviour standards.

Between December 30, 2013, and April 13, 2014, Sgt Treasure is accused of making "unpleasant comments about colleagues and members of the public" on three occasions, as well as "twelve other occasions on various unspecified dates".

She is also accused of making "untrue statements in respect of investigations" on January 11 and April 8, 2014.

In May 2014 - the month after Mr Else's murder - it is alleged that Sgt Treasure "refused permission to investigate a crime and arrest a suspect".

And on June 16 that year, she was said to have of "asked for the name of officers who had complained against her and then pressured an officer not to give evidence against her".

It is also alleged Sgt Treasure made untrue statements in a misconduct interview on January 7 last year.

When details of the allegations against Sgt Treasure first came to light, Mr Else's widow Clare said the police had "failed to do their duty" in responding to the brutal murder of her husband, who was killed just metres from the couple's home in South Croydon.

She said: "My husband was probably laying there thinking help should arrive shortly.

"They can't change the result with Andrew, but what about the rest of us that are out there expecting them to turn up and they don't? How is that supposed to give the rest of us comfort and make us feel safe?"

RELATED: 'Voices' told killer Ephraim Norman to stab his victim Andrew Else more than 200 times

Emergency response officers from Croydon station, nearly four miles away, had been the first to arrive at the murder scene within seven minutes of the frenzied attack.

Mr Else's killer, 24-year-old Ephraim Norman, suffered from paranoid schizophrenia and said voices in his head told him to murder the father-of-three.

He pleaded guilty to manslaughter by reason of diminished responsibility in 2015 and was ordered to be detained indefinitely at maximum-security hospital Broadmoor.

Soon after the claims about the response to Mr Else's murder were made public, the Crown Prosecution Service announced it would not be launching criminal charges against the officers at Addington station.

At the time Mrs Else described the CPS's decision as "unbelievable,” and voiced grave concerns about the transparency of an internal police investigation.

She said: "They are doing an investigation on themselves. How can you trust what that is? You can't, can you?

"I want an external investigation and I would like somebody to call me to tell me that. To me it just feels like there is a cover-up."

Sgt Treasure's misconduct hearing is due to take place between May 16 and 27.

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