Detectives are looking to speak to the driver of a blue Transit van who broke up the incident.
The victims were approached by a group of teenagers on the corner of St Michael’s Road and Linford Road in Chadwell St Mary’s at around 4.30pm on the afternoon of Wednesday, 24 January.
The group was reported to be made up of four to five teenagers, with some of them walking and others riding on bicycles.
All of the teenagers had their faces covered, but one wore a black coat with writing on it and fur around the hood.
One member of the group threatened the couple with a knife, asking for a phone. The two victims refused and offered the group money instead.
A man in a blue Transit van pulled over to break up the incident, before asking after the welfare of the victims. The group then left the scene.
Detectives are looking to speak to the driver of the blue Transit van and anyone else who may have seen the incident, as well as anyone who lives in the area and has CCTV or dashcam footage that may have been active at the time.
Anyone with information is being asked to call Grays CID on 101 quoting the crime reference number 42/34403/21, or to call Crimestoppers 100% anonymously on 0800 555 111. Information can also be reported online through the Digital 101 service.
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Tags: Grays, Essex Police, Chadwell St Mary's
