After the horrific attack in Christchurch, in which 50 people were killed and dozens injured, Tell MAMA has been helping mosques bolster their security.
This includes sending ex-police officers into mosques to train people in community safety and issuing security tips.
They are also advising mosques to temporarily stop their open-door policy and speak to every person who comes through their doors, carry out bag checks and change their opening hours.
The strategy includes patrols around mosques and is used by many synagogues and Jewish buildings in the UK.
Iman Atta, director of Tell MAMA, said mosques in the UK can no longer assume everything will be alright, adding: “Copycats can happen. It takes one person to take action into their own hands after being radicalised by online material.
“They would be more emboldened to do that now. It’s quite concerning. Therefore the levels of fear in communities are quite high.
“Mosques have informed us they are limiting their opening hours, ensuring they are checking people going in. There’s definitely a raised level of vigilance around mosques.”
Ms Atta also called on the government to provide resources for this security training and increased CCTV.
A spokesman from the East London Mosque and London Muslim Centre, based in Whitechapel, said: “We are reassuring our community by increasing security. We already have 24/7 security here, but we are doubling up on shifts, and volunteers are assisting too.”
On Monday security minister Ben Wallace warned a mosque attack “absolutely could happen” in the UK and the government was considering increasing funds for security at mosques.
Meanwhile, worshippers at the largest mosque in western Europe, Baitul Futuh Mosque, in Morden, south London, said they were “greatly hurt” by the attack.
Khalil Yousuf a spokesman for the Ahmadiyya Muslim Community said they already had “well thought out” security, adding: “If you can have an attack in New Zealand like this in such a peaceful country you can have an attack like that anywhere.”
Iman Zahir Hussain, from Al-Muzzammil Mosque in Tooting, said: “We haven’t implemented extra security, but the local police officers have been stopping in a few times today.
“While praying we have someone at the door but it’s just to keep an eye out. People are calm, it’s mainly to reassure them and give them confidence to come here.”
Recent days have seen a spate of incidents allegedly targeting Muslims including a hammer attack in east London and a stabbing in Stanwell, near Heathrow, which is being treated as a far-right terror attack.
Mohammed Mahmoud, hailed for calming fellow Muslims during the terrorist attack outside the Finsbury Park mosque, said he suffered “sad and reckless” Islamophobic abuse as he returned from attending an inclusion event at Regent’s Park mosque yesterday to promote unity in the wake of the New Zealand massacre.
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