The Department of Infrastructure is carrying out a risk assessment after the first traffic attendant to be deployed in Coalisland was forced to leave within a half hour.
It is understood the attendant was threatened by a member of the public.
The department has confirmed that its officials are investigating reports of an alleged incident last week.
Local DUP MLA Lord Maurice Morrow condemned what he called "thug mentality" and is demanding answers.
He also called on the elected representatives who slammed his support of traffic regulation in the area to condemn such behaviour and look to the interests of those who ultimately suffer as result of thug mentality.
He said: “Having welcomed the deployment of traffic attendants in Coalisland less than a week ago, it is regrettable so soon thereafter to be condemning those whose intimidatory actions have rubber-stamped their refusal to accept parity with other areas.
“Naturally I expected the sharp tongues of those who are angered by my raising this issue with one in particular telling me to butt-out, mind my own business and leave Coalisland to its own elected representatives.
“So where are they now when elements of the community are throwing their weight around and issuing threats and warnings? What action have they taken to address this behaviour or even condemn it? Where exactly do they stand on this issue?
“Instead, my phone is ringing with residents and business owners upset that the thug grouping in Coalisland are exercising control again. They come to me, I’m not going to them.
“It would therefore be helpful if those who criticise me actually did something for their constituents and encouraged the same regulation for a safer community with free-flowing traffic.
“I can’t fathom why there is such a hang-up with some members of the Coalisland community in relation to parking regulation. They clearly have no concern for the disabled and infirm who cannot access the designated parking areas.
"Or for emergency services who need a route which is not clustered with carelessly parked vehicles, in order to reach sick or injured people in time, or address issues of potential danger.
“It is deplorable that traffic attendants have been subjected to such behaviour and safety is the priority.
“However the withdrawal – whilst necessary for safety – sets a dangerous precedent. It demonstrates a placation of thug mentality and permits Coalisland to set itself apart.
"That is a gross breach of equality. If traffic attendants are to be excluded from one area, why not all? Perhaps those in the community who are opposed to regulation, or the elected representatives who speak for them, could outline why Coalisland is afforded special status placing it on an enhanced footing for some, but to the detriment of others.”