A group hurled antisemitic abuse at a traveller on a Tube train.
The attack took place on the Northern Line between Golders Green and Brent Cross in February.
British Transport Police have now released the images of four teenagers officers would like to speak to about the incident.
The victim was on a Northern Line train at 10.10pm on February 17 when a group boarded at Golders Green.
According to the British Transport Police (BTP), the group used antisemitic language toward the victim before getting off at Brent Cross.
The BTP says the youths pictured may have information that could help with the investigation.
Anyone who recognises the people in the images are asked to contact BTP by texting 61016 or by calling 0800 40 50 40, quoting reference 792 of February 17.
The public can also contact Crimestoppers anonymously on 0800 555 111.
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