A 12-year-old girl was allegedly assaulted by a large group of teen girls at a Sydney bus interchange, caught on video at a shocking incident. Mobile phone footage shows the victim being punched to the ground and repeatedly kicked in the head by at least four older girls wearing school uniforms. The assault was reportedly sparked by an altercation at a shopping centre. The girl's aunt, who did not know the alleged attackers, believes the attack may have started out of nowhere. Police are investigating the incident and are aware of multiple incidents involving groups of females within the Mount Druitt Police Area Command over the past week.