The all-day Discover Islam event was set to feature a wealth of activities including a tour of the mosque, seminars and Q&A sessions.
Mr Minhas said the open day had been planned before disorder broke out across the country following the fatal stabbing of three young girls in Southport.
The violence, in towns and cities across England, has been fuelled by misinformation online, the far-right and anti-immigration sentiment.
In South Yorkshire, rioters threatened to set the Holiday Inn Express, which housed asylum seekers, on fire on Sunday.
Mr Minhas said the continued unrest, especially so close to their own doorstep, had led to the difficult decision to cancel the event.
