WA Police Commissioner Karl O'Callaghan has warned parents that their teenage children may be detained if officers consider them "at risk" at out-of-control parties, regardless of whether they have committed a crime.
In an opinion piece addressed to parents in today's The West Australian, Mr O'Callaghan said officers would use the Children and Communities Act to detain youths who they believed were "at risk".
Parents would then be contacted and their details may be sent to the Department for Child Protection for further investigation.
"My officers are sick and tired of dealing with some of your children," Mr O'Callaghan wrote. "It is your children who make up the majority of people at out-of-control parties. It is some of your children who destroy the property of others at these parties and it is some of your children who are costing the taxpayers of WA hundreds of thousands of dollars."
Mr O'Callaghan's comments came as a Dudley Park father suffered severe facial injuries when a teenage gatecrasher struck him with a bottle during a confrontation over an out-of-control party.
Residents on Coodanup Drive had invited about a dozen people to a small 18th birthday celebration on Saturday but the event had spiralled out of control by 8.30pm.
The victim's wife, Kelly, said up to 30 youths had gathered outside the home about 7pm, and one of the hosts, Jay Thomas, believed up to 150 people were outside his home at the height of the disturbance.
Kelly said the situation escalated when gatecrashers were asked to clean up their mess.
"My husband ended up being glassed to the face," she said. "They were giving me a bit of cheek, saying it wasn't them. I was just asking them to clean up a mess they had made.
"Next thing I know I heard more glass being smashed, I saw my husband heading to the ground. I rushed over so he wouldn't hit the ground."
The impact caused a deep cut the length of an eyebrow. She believes he was lucky he did not suffer permanent eye damage and that the outcome could have been worse if he had hit the ground.
Mr Thomas said he tried to shut the party once gatecrashers tried to enter his home.
The party was not advertised on Facebook but some friends had "discussed" the event online, and he believes the gatecrashers followed those conversations.
Anyone with information regarding the attack is urged to contact Crime Stoppers on 1800 333 000.