<div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>A 16-year-old girl's birthday party in Sydney's south has gone horribly wrong after 500 teenagers turned up uninvited.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>The Sweet 16 on Bounty Avenue in Kirrawee quickly spiralled out of control last night.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>A video later circulating on social media shows a tense confrontation between police and some of the young people involved after the crowd turned hostile.</span></div></div><div><div id="adspot-mobile-medium"></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><strong><span>READ MORE:</span></strong><span> </span><a href="https://www.9news.com.au/national/jamie-dunn-death-agro-dies-at-the-age-of-75/3ebf4ab8-077a-490d-be2f-9b16a408fc43"><strong><span>Beloved Aussie entertainer Jamie Dunn dies aged 75</span></strong></a><span></span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>A boy, 16, was arrested at the scene after allegedly throwing a full can of alcohol at officers.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>In a statement defending their actions, police said "when bottles were thrown at police, OC spray was deployed" and that during the arrest "the boy resisted officers".</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>He was one of three teenage boys arrested.</span></div></div><div><div class="OUTBRAIN" data-reactroot="" data-src="//www.9news.com.au/national/kirrawee-birthday-party-gatecrashed-by-500-teenagers-in-sydneys-south/6a917952-9de8-422e-9918-b34fc4138421" data-widget-id="AR_5"></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><strong><span>READ MORE:</span></strong><span> </span><a href="https://www.9news.com.au/national/government-to-offer-bus-rides-from-qatar-to-saudi-arabia-to-help-stranded-aussies-get-home/01e5eb0a-af57-4ef1-a77d-c04143fd5da4"><strong><span>Stranded Aussies offered buses from Qatar to Saudi Arabia</span></strong></a><span></span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>All of them were later released without charge.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>Neighbours said they were left shaken by what unfolded and many young children watched the chaos unfold on their doorsteps.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>"There were a few people climbing over their neighbours fence here to get in and out of the party," neighbour Aedan Byrne told 9News.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>It took police, an overhead helicopter and the riot squad more than an hour to disperse the crowd.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><strong><em><span>NEVER MISS A STORY:</span></em></strong><span> </span><em><span>Get your breaking news and exclusive stories first by following us across all platforms.</span></em></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><ul><li><strong><em><span>Download the 9NEWS App here via</span></em></strong><span> </span><a href="https://apps.apple.com/au/app/9news/id1010533727" target="_blank"><strong><em><span>Apple</span></em></strong></a><span> </span><strong><em><span>and</span></em></strong><span> </span><a href="https://play.google.com/store/apps/details?id=nineNewsAlerts.nine.com&amp;hl=en_AU&amp;pli=1" target="_blank"><strong><em><span>Google Play</span></em></strong></a></li><li><strong><em><span>Make 9News your preferred source on Google by</span></em></strong><span> </span><a href="https://9.nine.com.au/8x987w" target="_blank"><strong><em><span>ticking this box here</span></em></strong></a></li><li><strong><em><span>Sign up to</span></em></strong><span> </span><a href="https://login.nine.com.au/edm?client_id=nineatnine" target="_blank"><strong><em><span>our breaking newsletter here</span></em></strong></a></li></ul></div></div>