Police are concerned the killer of primary school teacher Sabina Nessa could strike again - as investigations into her murder continue.

Detective Chief Superintendent Trevor Lawry has said there is nothing to suggest it would happen, but that it is always a concern.

When asked about safety concerns and the chance of a repeat of the attack, he said: “It’s always a concern that it may happen, but that’s not something that we have any intelligence on at this time.”

When asked whether he believes a stranger was behind the attack, he added: “That’s definitely a line of inquiry that we’re looking at.”

Speaking from the crime scene in Cator Park, Kidbrooke, Lawry added that detectives are “keeping a completely open mind” on what the motive of the attacker may have been.

When asked whether police have any leads on who the killer may be, he said: “There’s significant lines of inquiry at the moment and they’re ones that I can’t divulge.”

Detective Chief Superintendent Trevor Lawry also insisted London’s “streets are safe for women” following the murder of Sabina Nessa.

Asked how women could feel safe following her murder in the south east of the capital, months after the killing of Sarah Everard, he said: “The streets are safe for women, I’d like to reassure the public around that, I’d like to make sure that people are free to walk around free from fear and my officers will make sure that that can take place.”

Asked whether anything has changed in the way the Metropolitan Police tackle violent crime against women since Ms Everard’s death, he said: “I think the main things that are changing are that, one, we’re listening to people, we’re understanding where people are feeling not so safe, and we’re putting out patrols to make sure that we do that.

“This isn’t just a policing issue, there’s lots of issues to be able to make people feel safe in an open space and we’re working with our partners to ensure we do that.”

He added that officers will attend a planned vigil for Ms Nessa on Friday.

Kidbrooke Teacher Sabina Nessa is thought to have been murdered during a five-minute walk to meet a friend at a pub, police have said.

Officers investigation the killing of the 28-year-old have released details of the route she was travelling on at the time of the attack in the hope further witnesses come forward.

The Metropolitan Police said Sabina left her home on Astell Road in south east London last Friday and walked through Cator Park towards The Depot bar in Pegler Square, Kidbrooke Village, when she was attacked.

Her body was found near the OneSpace community centre at Kidbrooke Park Road in the Royal Borough of Greenwich at around 5:30pm on Saturday.

"Sabina never arrived at the pub and is thought to have been murdered as she walked through the park," the force said.

A post-mortem examination, carried out on Monday, was inconclusive.

In the last few days there has been outpouring of tributes but also shock and alarm after another shocking case.

Sadiq Khan tweeted that he was "heartbroken" by the news and that "women and girls deserve to feel safe at all times."

A candlelit vigil is going to be held on Friday to mark the life of the 28-year-old.

Detective Inspector Joe Garrity said: "Sabina's journey should have taken just over five minutes but she never made it to her destination.

"We know the community are rightly shocked by this murder - as are we - and we are using every resource available to us to find the individual responsible."

He added the investigation was making good progress, and said: "We believe there are still others out there who may have information that could help.

"If you think you saw Sabina or any suspicious behaviour in or around the park on Friday evening please speak to us."

Anyone with information is asked to call police on 0208 721 4266 or Crimestoppers anonymously on 0800 555111.

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