Halifax Regional Police are asking anyone with photos or videos of a crash that occurred on Highway 102 over the weekend to come forward.
The crash happened around 5 p.m. Saturday near Exit 0 of the highway.
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Investigators believe a white Acura traveling outbound from Bayers Road crossed over the low median and collided with a Black Grand Caravan traveling inbound.
Two people in the Acura were sent to hospital with life-threatening injuries.
The driver of the Caravan was taken to hospital with non-life-threatening injuries, according to police.
Police are hoping the photos and videos of the crash will help them determine the exact cause.
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Anyone with information on the incident is asked to contact Halifax Regional Police or Crime Stoppers.