Students who were in this morning's confrontation with the guards are calling for the UPNG vice-chancellor to apologise.
"No classes until the UPNG administration reconciles with us," a student leader told Loop PNG.
Violence erupted around 8am today when Uniforce guards allegedly forced students to go to class.
However, a Uniforce staff told Loop PNG that a group of students tried to prevent their colleagues from attending classes this morning.
"Uniforce tried to stop them when fight broke out," he stated.
At least three UPNG vehicles were burnt while a guard was reported to be injured.
Students still need to confirm injuries at their end.
The reconciliation ceremony between the UPNG administration and students was supposed to be held this afternoon.
Police are in dialogue with the students and vice-chancellor Professor Albert Mellam, in an effort to contain the situation.
