Four people have now been charged with drug offences at the Beyond the Valley festival near Inverleigh.
An 18-year-old man from Lara was allegedly found with MDMA during a search on Tuesday evening.
He has been charged with drug offences and bailed to face the Geelong Magistrates’ Court in March.
A 22-year-old man from Croydon Hills has also been charged and bailed, after he was allegedly found with drugs on Tuesday afternoon.
Two men were charged with drug trafficking offences on Monday.
They were also bailed to face Geelong Magistrates’ Court in March.
Police are warning they will continue to have a visible presence at the festival, patrolling grounds to deter any criminal activity of anti-social behaviour.
They will also continue to enforce offences away from the pill-testing area, and will seize any illicit substances.
Officers say it also has zero tolerance for drug traffickers, and will no hesitate arresting and charging someone for that offence.