Halifax Regional Police were on scene at Halifax West High School in relation to a threat call Friday morning.
Within an hour, police determined there was no threat and the area was re-opened to vehicle and pedestrian traffic.
At 8:37 a.m., the school said in a tweet that they were under a lockdown as a preventative measure.
By 9:05 a.m., the school tweeted they were in a hold and secure protocol and were awaiting further instruction from police.
Police asked the public to avoid the area and to “not post live video from the area online.”
Shortly before 9:30 a.m., police said they had completed their investigation and there was no threat.
The school indicated they were opening the school for the day and were starting classes.
Shortly after, police were on scene at Auburn Drive High School in Dartmouth, also in response to a threat. The school was placed on a hold and secure, but it was later lifted.