There are fears more Muslims could be the targets of attacks, after a van ploughed through worshipers outside a London mosque.
Ten people were hurt, while one man had a heart attack and died at the scene.
The driver of the van - a 47-year-old Welshman - has been arrested for the commission, preparation or instigation of terrorism including murder and attempted murder.
UK Correspondent Gavin Grey told Rachel Smalley by-standers reacted quickly and effectively.
"The driver got out shouting 'I want to kill all Muslims. The people who subdued him until the police arrived have been commended for basically holding him down, but not resorting to other violence."
Prime Minister Theresa May has condemned the attack and is upping police presence around mosques.
Gavin Grey said people are being urged not to give in to terrorism.
"These sorts of attacks on Muslims may well fall into the very hands of the terrorists. They want divided communiuties, they want communities that don't trust one another."
LISTEN ABOVE AS GAVIN GREY SPEAKS WITH RACHEL SMALLEY
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