A 64-year-old man was struck in a random assault in Stamford Hill as he was making his way to a synagogue.
Police have released an image and footage of a man they need to identify and speak with in connection with this assault, as well as three others on the same day, which they believe to be linked.
The attack is being treated as a hate crime.
On August 20, police received a report of an assault that occurred on Stamford Hill at the junction with Colberg Road at about 8.30pm on August 18.
After speaking with the victim they established that he had been making his way to his synagogue when he was struck.
He suffered facial injures and fell to the floor, breaking a bone in his foot. He was taken to hospital for treatment and was later discharged.
Police are now linking the incident to two other assaults on the same day.
Shortly after 6.40pm, a 30-year-old man was struck on the head with a bottle in Cavenove Road N16.
At 7.10pm, a 14-year-old boy was walking in Holmdale Terrace N15 when he was approached and assaulted without warning.
Both of the victims were also Jewish. Their injuries are not life-threatening.
Officers have also been informed of a fourth victim who has yet to contact police. Enquiries to identify them are ongoing.
Anyone who recognises the man, or who witnessed the assaults and is yet to speak with officers, is asked to come forward.
There have been no arrests and enquiries continue.
Call police on 101 quoting reference 4492/20AUG. To remain anonymous, contact Crimestoppers on 0800 555 111.
To report a hate crime, call police on 101, report online or tweet @MetCC. Or call 999 in an emergency.
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