July 5, 2014 3:49 pm

Police conduct area search for clues into case of missing family

WATCH: (Jul. 5, 2014) Police are now asking to go inside up to 300 homes near the house where the family was last seen in an attempt to find the victims. Carolyn Kury de Castillo reports.

LATEST UPDATE:

CALGARY – Calgary Police are conducting an area search for a missing boy and his grandparents on day six of the investigation into their disappearance.

The search got underway Saturday morning near the home where five-year-old Nathan O’Brien and his grandparents were last seen.

Timeline: Missing Calgary family Nathan O’Brien, Alvin and Kathryn Liknes

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Twenty members of the Calgary Police Search Management Team and 30 members of Calgary Search and Rescue are searching an area near the house in Parkhill.

It covers the area north to Mission Road and south to 42 Avenue, as well as east toward Macleod Trail and west to the Elbow River.

Police say this is the second time they are searching the area to make sure nothing was overlooked during the initial search.

“So ideally what we do is search immediately after. And then we come back five to seven days later and redo that area,” said S/Sgt. Rob Davidson.

“When we look at other agencies that have had similar disappearances, the secondary search has often gathered information that is helpful in finding the persons that are abducted,” Davidson explained.

Searchers will be interviewing park users and homeowners. They will also be searching inside some of the homes.

“Within this search area we have over 300 residences,” Davidson said. “We want to make sure that every space that someone could possibly be hiding is checked.

“This will be one of the most intense searches that we have done in the history of the service.”

Police confirmed Friday that a violent incident occurred inside the missing family’s home.

READ MORE: Police confirm ‘violent incident’ occurred inside missing family’s home

This is the first time search and rescue has been used in this investigation.

Investigators have also turned their attention to a green truck that was seen “several times” in the area the night of the family’s disappearance.

Parkhill Liknes Truck 2

READ MORE: Police hope driver of green truck has information about missing family

O’Brien and his grandparents, 66-year-old Alvin Cecil Liknes and 53-year-old Kathryn Fay Liknes, have not been seen since last Sunday night, when the boy’s mother dropped him off at the Liknes’ Parkhill home for a sleepover. An Amber Alert has since been issued, but so far there is no sign of the trio.

© Shaw Media, 2014

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