Organisers of Belfast's half marathon have launched an investigation into claims Massgoers were prevented from accessing and leaving services on Sunday morning.
But Belfast City Marathon Ltd added management could not comment further while the investigation continues.
Fr Tim Bartlett, the administrator of St Mary's in Chapel Lane, parishioners and other locals are planning a meeting to discuss what are described as confrontations amid city centre road closures as thousands of runners took part in the half-marathon.
Read more: Priest tells of 'dog collar' insult as Belfast half-marathon stops Massgoers
He and others want to meet with the PSNI, the run organisers, EventSec and Belfast City Council, which provides funding for the half marathon.
Roads all around the church were closed for several hours into early afternoon leaving some Massgoers unable to attend services.
Fr Bartlett said he was told by a security staff member employed by EventSec to "take my dog collar, go back in to your Church and pray for the salvation of sinners”.
He further said Massgoers were threatened with fines and that one of Eventsec staff got on the bonnet of a car. EventSec did not reply to a number of messages asking for comment.
Former Belfast City Councillor Margaret Walsh said she had difficulty both making her way to the church and leaving. She had to travel in a car from Barrack Street as her husband is disabled.
Mrs Walsh said she had no idea the roads would be closed prior to Sunday morning. They had to take several turns and travel the wrong way down a one-way street before finally arriving at the church for the 10am service.
They were only able to make the service because a police officer allowed them through the cordon. But Mrs Walsh and her husband were unable to leave for some time after the 10am service.
"We were not advised it was taking place, not aware of it at all. Other neighbours were unable to leave, including one person who was going to work," said the former councillor, adding she tried to get in touch with EventSec but received no information. She backs calls for a meeting with all those involved in organising and stewarding the event.
Fr Bartlett was also critical of police officers, saying his "experience of the police on the day ranged from confused, to half-hearted to down right aggressive and sinister, with one officer continually insisting that I had lied to them."
Superintendent Finola Dornan, Commander for South and East Belfast, said: “We work with event organisers and partner agencies to ensure the safety of those participating in this event and minimise the impact on others in the area.
“It is regrettable that disruption was experienced by people attending Mass on Sunday morning.
“We are seeking to engage with those affected in the coming days to respond to their concerns.”
