A woman was threatened with a "30cm knife" as she walked through the grounds of Fulham Palace.
The victim had a bag, containing a laptop computer, snatched from her shoulder by a man while a second male held a knife towards her moments later.
A Fulham police officer is now warning residents to be “more aware of their surroundings” following the incident, which happened on Monday (October 2) evening.
The victim was left unharmed.
PC Ronan McDermott from the Palace Riverside ward said in an email sent on Tuesday (October 3) the woman was walking at towards Putney Bridge tube station through the Woodland walk next to Bishops Park when the thieves struck at around 6.15pm.
He said: “One male approached from behind and snatched her bag off her shoulder.
“This caused the victim to drop her phone and when she stood upright from picking it up, another male was stood next to her holding a 30cm knife towards her.
“This male was then disturbed and ran off after the first male towards Putney Bridge I believe.”
He continued: “Neither male said anything to the victim but the first male made off with her bag with a laptop inside.
“I saw her today and she was OK, not hurt in any way so that’s a relief.
“I don’t want to panic anyone, but now that then days are getting shorter can I ask that people be more aware of their surroundings.
“Walk home in pairs, don’t have valuables on show etc, these simple steps could prevent you becoming a victim.
“This could happen anywhere on our ward, it just happens to be the Palace Grounds at this time.
Both males are described as black, wearing black hoodies pulled up over their heads. One of the black tops had white writing on the front.
Anyone with information can call police on 101.
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