Shocking footage shows 'violent confrontation' at a stop sign moments before nightmare head-on crash that killed four teens and left two others fighting for life Fatality was in Melbourne's west on September 30, four teenagers were killed CCTV footage has revealed an road altercation moments before head-on smash The sedan with the youths crosses to the other side of the road and speeds off Police confirmed they are investigating the altercation with three other cars At horror scene, four teens died after their vehicle lost control and hit a truck By Emily Woods In Melbourne For Australian Associated Press Published: 23:53 BST, 13 October 2021 | Updated: 23:54 BST, 13 October 2021 Viewcomments Investigations are underway into whether an altercation with three other cars contributed to a 'catastrophic' crash that killed four teenagers less than 10 minutes later. Four teens, including the 16-year-old driver, and passengers aged 15, 16, and 17, died after their Ford sedan lost control and hit a small truck at Truganina about 7.30pm on September 30. The sedan had six young men inside and none were wearing seatbelts. Police say there is 'nothing at this time to indicate any culpability' on behalf of the 28-year-old truck driver, who was also injured in the crash. The Homicide Squad has been called in to assist Major Collision Unit investigators, with police now looking into an incident minutes before the crash. CCTV footage has shown three cars (pictured) involved in an altercation with another vehicle in Melbourne's west on September 30 - moments later four teenagers were killed after their sedan smashed head-on into a truck The grey sedan (pictured) can be seen leaving the scene with haste - and driving on the wrong side of the road At 7.22pm, police say 'some type of altercation' occurred involving people inside three other vehicles, a red Volkswagen Golf GTI, a blue Volkswagen Golf R and a red Holden VF Commodore. Each of the vehicles contained 'a number' of men. In CCTV footage, the sedan driven by the 16-year-old boy is boxed in by three cars on Derrimut Road outside the Tarneit Shopping Centre. The sedan reverses, as several people jump out of the other vehicles and run towards it. It then crosses to the other side of the road and speeds off. Police are investigating whether the incident is connected to the deadly crash and whether it contributed to 'the way the victim's vehicle was being driven'. They are asking for anyone who was near Derrimut Road at that time to come forward. At the time, Assistant Commissioner of Road Policing Glenn Weir described the crash as 'catastrophic'. Police said the sedan was heading east along Dohertys Road in Truganina in Melbourne's west when it crashed head-on into the truck near Forsyth Road about 7.30pm on September 30. Two of the car's occupants died at the scene and another two were pronounced dead as they arrived at Royal Melbourne Hospital. Fire Rescue Victoria said rescue crews pried the sedan driver and his five passengers from the car after all six trapped were inside the vehicle. Images from the scene showed the sedan with its side doors removed. Four teenagers were killed after the sedan they were travelling in crashed into a truck in Truganina in Melbourne's west Two of the car's occupants died at the scene and another two were pronounced dead as they arrived in hospital Fire Rescue Victoria said rescue crews pried the sedan driver and his five passengers from the car Share or comment on this article: All rights reserved for this news site (dailymail) and under his responsibility