The Ballaghaderreen Islamic Community Centre has completely rejected the proposal to turn the town’s historic convent into a mosque.
The Pakistani businessman behind the idea has vowed to scrap the plan if it creates division among religions.
Last week Mohammad Aslam placed an offer on St Mary’s Convent in Ballaghaderreen, a derelict building that was built in 1876.
The building is due to be auctioned shortly, with a reserve price of €50,000.
Mr Aslam, who recently came to live in Roscommon, wants to turn it into a mosque.
However, the Ballaghaderreen Islamic Community Centre committee has rejects the idea.
It bought a house at The Meadows in the town in 2012, which holds prayers every Friday for Muslims, in what’s a makeshift mosque.
Mohammad Arfan, who lives next door to it, is a member of the centre’s committee.
Sajjad Hussain, another member of the committee, also dismisses the idea, saying the convent is too big and would be too expensive to overhaul.
Mohammad Aslam says his idea was simply to help the Muslim community in Ballaghaderreen and would withdraw the proposal if it caused too much division.