Police are investigating after a Cardiff councillor says he received an anonymous threatening and intimidating letter from Islamic extremists.
Riverside councillor Mohammed Sarul Islam told BBC Wales he was being blamed for a recent police operation at Canton Community Hall, in Canton.
The letter called Mr Islam an “enemy of Allah”.
Since the operation, police patrols have been increased and personal alarms given to centre staff.
In January, anti-terrorist police halted a meeting at the community hall over fears of a link to banned Islamist group Muslims Against Crusades.
Welsh Extremism and Counter Terrorism Unit officers were called to the centre following concerns raised by members of the local Muslim community.
One man was arrested for assault and a public order offence.
Since then police patrols have been stepped up in Canton.
“There’s a lot of police presence in Canton anyway, patrols have been increased and that is purely to reassure the community,” a police spokeswoman said.
The Community Safety Department subsequently visited the hall, as a matter of procedure, and 11 members of staff requested personal safety alarms.
After receiving the anonymous letter, Mr Islam said: “I feel the letter is very intimidating and personal to myself and to my families.”
Mr Islam said he was not at the community centre during the incident.
“I wasn’t anywhere near that place,” he said.
“We, the local community, will always condemn any kind of extremism that is going to affect our diverse and peaceful community and I will stand against it in any time, regardless whoever it is, and therefore I will speak for truth and I will stand by my principles and by my ward.”