The man arrested over this morning's terror attack in Finsbury Park has been named by the BBC as 47-year-old Darren Osborne.
Osborne is reportedly from the Cardiff area, and it was earlier reported that a raid took place in the Welsh capital in connection with the attack.
The attacker drove a van into a crowd of Muslim worshippers outside a mosque, killing at least one and injuring a further 10 in the latest atrocity to blight the UK.
The suspect was arrested earlier today, and security minister Ben Wallace has said he was not previously known to the authorities.
Theresa May, addressing the nation in the wake of the attack, said this morning that all the evidence suggested the attacker alone, while condemning the attack as "evil."
May said "The early assessment by police is that the attacker acted alone," and said the incident was "every bit as sickening as those that went before" in London and Manchester.
"Today we come together as we have done before to condemn this act and state again that hatred and evil of this kind will never succeed," the Prime Minister continued.