A male passenger was seriously injured and the driver was taken into custody following a single-vehicle rollover tonight on southbound Highway 404, north of Newmarket.
The debris-littered highway was closed between Queensville Sideroad and Green Lane, as Ontario Provincial Police investigate the accident that occurred at about 5 p.m, according to OPP Sgt. Kerry Schmidt on Twitter.
Further details on the condition of the passenger, who was ejected from the modified truck, are not being released, Schmidt said.
"(Investigators) will be looking into everything that's going on in relation to the crash and whether or not it was mechanical, environmental or human factors that contributed to this collision," Schmidt said.