Update (6:48 p.m.): Barrie police said Fairview Road has been reopened in both directions.
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A section of Fairview Road was closed Thursday afternoon following a single-vehicle rollover near Barrie Police Headquarters.
Barrie police said the road was closed between Little Avenue and Big Bay Point Road for the crash investigation.
Three people were transported to local hospital, but the severity of their injuries was unknown.
Around 3:30 p.m., police said the road would remain closed indefinitely for the investigation.
Officers were also searching the Barrie-Simcoe Emergency Services Campus grounds for an older black Lab named Otis, after he fled from the collision
If seen or located, police say he's friendly. If you have any information about his whereabouts, call 705–725-7025.