Police were called to a mosque near Regents Park in London on Thursday after reports of a stabbing.
Officers attended along with paramedics from the London Ambulance Service (LAS).
A man in his 70s was suffering from stab injuries. He was treated by paramedics before being taken to hospital. His condition has been assessed as non life-threatening.
A crime scene has been put in place and a man was arrested at the scene on suspicion of attempted murder.
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