Watch The Story So Far's Frontman Take On Warped Tour Security

US pop-punk luminaries The Story So Far found themselves at the centre of a brief controversy after the Montreal leg of the Vans Warped Tour at the weekend, when frontman Parker Cannon was involved in an altercation with a security guard during the band's rendition of their popular track Daughters.

As the Alternative Press reports, during the intro to Daughters, a security guard man-handles a fan who had allegedly crowd-surfed over a barrier and throws them to the ground. Clearly, the band members on stage felt the response was too excessive for the crime - immediately, the band's guitarist, Will Levy, takes off his guitar in protest while Cannon leaps off stage to have a word or two to the guard using his fists.

It all starts going down from about the 40-second mark in the fan-shot footage below:

Meanwhile, amid the chaos, Four Year Strong's Alan Day gets involved off to the right while other security guards rush to pull Cannon off their apparently overzealous co-worker, while one of them repeatedly tells Cannon to relax. Eventually, the band resumed their set - and the incident obviously couldn't have left too sour a taste in their mouths, given their post-show tweet:

Meanwhile, tour founder Kevin Lyman indicated that the festival would be investigating the incident, before offering in another tweet this morning:

Despite his relative reluctance to comment one way or another on the incident, one savvy tweeter managed to at least prompt a response that suggests, at the base of everything, Lyman may actually fall on Cannon's side as far as rights and wrongs in this situation.

Watch a longer fan-shot version of the altercation below: