Police maintained a strong presence at the Marmalade Skies event held on a Wollogorang Rd property south of Goulburn from Friday to Sunday.

Detective Inspector Chad Gillies said two officers were stationed inside the festival while outside the event, others were testing patrons as they arrived on Friday night and left on Sunday.

With the help of sniffer dogs, police checked 217 cars upon their arrival. DI Gillies said 21 of these were searched, resulting in 13 drug detections.

On Friday, five people were charged with drug possession while a further six were issued cannabis cautions.

Two males were allegedly found with methamphetamine  while out on the highway, officers arrested a man allegedly possessing 67 grams of methamphetamine.

Sergeant Rod Cranston confirmed one midrange PCA and seven positive roadside drug samples as part of testing on nearby roads.

Some 250 people attended the festival, far less than the 1000 to 1500 people expected. The event featured a large line-up of Australian bands.

The festival was postponed late last year. Organisers had not lodged a development application in time and when they did, Council raised concerns over fire risk.

Meantime, police are warning people to properly secure their vehicles following a spike in break ins and thefts.

Thirteen cars, all in the Ifield area, were broken into and had items stolen since the beginning of April, DI Gillies said.

“The vast majority of those were unsecured and occurred late at night or in the early hours of the morning,” he said.

Owners lost electronics, money and personal belongings.

A male was disturbed trying to break into a car in Albert St in the early hours of Wednesday. Police believe he was responsible for another theft from a vehicle parked in Kinghorne St on Tuesday night.

He is believed to aged 15 to 18.

“We ask people to be vigilant and to ensure their cars are locked and their valuables properly secured,” DI Gillies said.