Two people were arrested on suspicion of arson after a fire at a London memorial wall commemorating Iranians killed in anti-government protests, police said on Monday.
The wall in Golders Green in north London, where two Jewish men were stabbed this week, also commemorates victims of the October 7, 2023 attack by Palestinian Hamas militants on Israel.
The area is home to a large Jewish community.
The incident is the only one of a spate targeting the Jewish community in recent weeks that has not been claimed by a little-known group, the Iran-linked Harakat Ashab al-Yamin al-Islamiya (HAYI), according to SITE Intelligence group.
A 46-year-old man and a 38-year-old woman, who have not been named, were arrested in Romford, east London, earlier Monday, the capital's Metropolitan Police said.
On Friday a 45-year-old man appeared in court charged with stabbing two men in Golders Green on Wednesday, the latest incident to rock London's Jewish community.
The attack has left community members feeling increasingly vulnerable and highly critical of authorities.