However, the situation quickly changed as more people continued to stream into the venue, leading to congestion and pushing at entry points.
Police officers on site attempted to manage the swelling crowd, urging those present to maintain order and follow security guidelines.
According to police, the use of teargas became necessary after sections of the crowd reportedly became unruly and failed to heed instructions.
Officers said some individuals attempted to breach security barriers, raising fears of a stampede and possible injuries.
“The crowd became difficult to control, and we had to take action to restore order and ensure the safety of everyone present,” a police officer at the scene said.
The teargas caused panic among attendees, with many seen running in different directions to escape the choking fumes.
Some supporters sought refuge in nearby buildings, while others retreated to safer distances from the rally grounds.
Despite the disruption, organisers of the rally maintained that the turnout demonstrated strong support for the DCP party and its agenda.
They accused authorities of using excessive force, arguing that the situation could have been handled more calmly.
“We had a peaceful gathering, and it is unfortunate that it ended this way. Our supporters were simply exercising their democratic right to assemble,” one organiser said.
No serious injuries were immediately reported, although several people were treated for the effects of teargas exposure.
Medics on standby provided first aid to those affected, while others were assisted by fellow attendees.