Halifax Regional Police's major crime unit returned to Shad Bay on Thursday, searching a property a few doors down from a home that was the scene of a dramatic search in March.

At that time, they spent four days digging up a backyard at 4117 Prospect Road, looking for human remains. Experts used cadaver dogs, excavators and shovels to dig through the yard. After days of being tight-lipped, they announced nothing was found at the scene.

Officers returned to the area Thursday morning, this time searching 4063 Prospect. They collected bags of evidence, but wouldn't say what brought them back to the site.

Some material was seized from deep in the woods behind the house. Investigators say they are now testing what they found to see if it relates to any crime.

Cold case speculation

At the time of the original investigation there was speculation the case was connected to a missing Halifax teenager who disappeared in August 1989. Kimberley McAndrew's family told CBC they had spoken to police but the officers did not confirm a connection. McAndrew's family told CBC on Thursday that they had not been contacted about this latest investigation.