Wardell families plead for help in fatal crash now being treated as homicide [Video]

Footage of a country bridge shows a navy Mazda ute driving over it, closely followed by a silver Toyota Corolla sedan.

The early-2000s sedan speeds up towards the Mazda BT-50 as the bridge ends, getting so close its brake lights flash.

Police have released CCTV relating to a crash in Wardell in February which killed four people.Credit: NSW Police

Shortly after these movements were captured on CCTV, the ute lost control on a bend and hit a tree in Wardell, south of Ballina. Its 36-year-old driver, Mark Dodds and his passengers, Sophie-Lee Fullagar, 24, Benjamin Watego, 50, and James Doherty, 42, were killed.

Nearly three months after the crash, police are treating the tragedy as a homicide investigation.

Richmond Police district commander Superintendent Scott Tanner said police believe the Toyota was chasing the Mazda shortly before the crash and …