Calgary police say a man taken in for questioning in the case of a missing five-year-old boy and his grandparents is not the only lead in their investigation.
But spokesman Kevin Brookwell isn't willing to discuss what other angles police are pursuing.
"There are other investigative leads we are following up on, so he is not the only person of interest that we are looking at," Brookwell told reporters Tuesday.
Asked to clarify, Brookwell backed away from suggesting there were other persons of interest in the case.
"He's ... a person of interest that we have interviewed, but there are other investigative leads that we are following up on."
Douglas Garland was taken into custody over the weekend for questioning in the disappearance of Nathan O'Brien and his grandparents, Alvin and Kathy Liknes, who have been missing since June 29.
Court records show Garland, 54, has a criminal past involving drugs and identity theft and Calgary police confirm his sister is in a relationship with a member of the Liknes family. Garland remains in custody on an unrelated charge.
An Amber Alert remains in effect and police are still searching the rural property and surrounding area where Garland lives north of Calgary.
Brookwell said sightings of the three missing people have been reported across the country and police still hope they will be found alive.