Riot police were called to a community hall in Sydney's west on Friday night and a 17-year-old was arrested after a party for underage teens allegedly turned violent.
Up to 400 people were at a party at Sandringham Drive in Cecil Hills at 11pm, when police were called with reports of underage drinking and "anti-social behaviour".
Officers from Green Valley Local Area Command responded. When they arrived, police allege a 17-year-old boy punched a male officer in the face.
The teen was arrested, with police taking his details to pursue him later, before he was released and told to leave the area
The officer was not injured.
After the alleged assault, police from surrounding areas were called to the scene, including officers from the Public Order and Riot Squad.
Around 30 minutes after he was first arrested, the 17-year-old was taken into police custody again after he allegedly failed to leave the party.
Another teen, 16, was also arrested for allegedly failing to comply with a move-along direction.
Both teens were taken to Green Valley Police Station and were later released to their parents.
The pair are expected to be dealt with under the Young Offenders Act, police said.
Source: smh.com.au
