Trustees from Kingston Mosque have expressed concern after a fire ravaged south London's largest mosque last week.
More than 70 firefighters battled the blaze at Morden's Baitul Futuh Mosque on Saturday.
Kingston Mosque suffered a similar fate earlier this year when a fire left the East Road building's internal structure gutted and the building unusable over the summer.
Trustee Faisal Hanjra said: "We were very concerned to hear about the events in Morden. Especially given concerns around a possible arson attack.
"Having been through this ourselves we can very much empathise with their situation. We wish the community the very best in their efforts to get to the bottom of the cause."
The investigation into the fire at Kingston Mosque is yet to be completed, he added.
In a demonstration of community spirit in Kingston, St Luke's Church and St John Bunyan Church took in congregations of Muslim worshippers during prayer times.
Please write: COMMENT in this box to verify that you are human