POLICE are still seeking to trace a Good Samaritan who came to the aid of a woman in her 20s who was threatened at knifepoint by a hooded robber wearing a surgical face mask.

Police are hunting for the robber after the terrifying ordeal left the woman "extremely shaken".

Police would also like to speak to a man who came to the woman's aid, believed to be called James.

At around 7.20pm on Wednesday, June 17 it was reported that a woman in her 20s walking through St Helens town centre was followed by a man down Shaw Street, along Chalon Way East and down Salisbury Street.

On the approach to the Steve Prescott Bridge, the man shouted for the woman’s attention and demanded she hand over cash, a mobile phone and her backpack.

The man then produced a kitchen knife and took the victim’s purple backpack and phone, running away in the direction of St Helens Chamber.

It is believed he discarded the rucksack a short time later, and removed a surgical face mask and hood he was wearing at the time of the offence.

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Another man came to aid of the victim shortly after the attack, known only as ‘James’, who was wearing a hat and green coat.

Police would like to trace the man as he too could have information that could help the investigation.

He is believed to be called James, and was wearing a hat and green coat.

The suspect is described as a white man in his early 20s, of slim build, and approximately 5ft 8in tall. He was wearing black hiking trousers, a light grey hooded top and a blue jacket. At the time of the robbery, the suspect had his hood up and was wearing a surgical face mask. He is also described as having a very distinctive walk.

Detective Constable Lauren Bott said: “Thankfully the victim in this incident was not physically hurt, but was left extremely shaken by the ordeal she was put through by this offender.

“We would like to hear from anyone who may have information on this incident, or who recognises the description of the offender as someone they know.

“We continue to work proactively to educate people of all ages, make arrests and seize weapons to prevent others from being put through ordeals such as this involving the use of knives.

“You can help us by telling us where knives are stored and who is carrying them. We will take all reports seriously and take action to make our streets safer.”

Anyone with information on this robbery or knife crime is asked to contact Merseyside Police social media desk via Twitter @MerPolCC or Facebook ‘ Merseyside Police Contact Centre ’. People can also call 101 quoting incident reference 20000353300, or contact the independent charity Crimestoppers anonymously, on 0800 555 111 or via their online form at: crimestoppers-uk.org/give-information/give-information .