September 17, 2014 2:49 pm

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

WATCH: Global’s Paul Haysom lays down the timeline thus far in the investigation.

It’s been almost three months since five-year-old Nathan O’Brien and his grandparents Alvin and Kathryn Liknes were last seen, sparking an Amber Alert.

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Global News

Here’s a look at a timeline of events in the missing persons investigation up to the Wednesday court appearance of accused murderer Douglas Garland.

June 28-29, 2014 – Nathan’s grandparents hold an estate sale in the 100 block of 38A Avenue S.W. The Liknes’ had bought a home in Edmonton, where they were planning to live after spending time in Mazatlan, Mexico. The sale was planned to help get rid of some of their belongings ahead of the move.

June 29– Nathan’s mother dropped him off at his grandparents’ home for a sleepover. The last time he and his grandparents were seen was around 10 p.m.

June 30 – Nathan’s mother called police from his grandparents’ home around 10 a.m. when she went to pick up her son, but found no one at home. Police issued an Amber Alert later that day.

Police said evidence found in the Parkhill home suggested the disappearance may be suspicious, since it was “not in the condition it typically would have been left in,” according to Kevin Brookwell from the Calgary Police Service. Everyone’s vehicles were accounted for.

July 1 – Police went door to door to speak with neighbours of the grandparents. Neighbours said they saw Nathan playing in the backyard Sunday afternoon, with his grandfather watching nearby.

Police added the trio may have left their home against their will. At that time, it was too early for police to say whether the estate sale was connected to their disappearance.

July 2  – Nathan’s parents Rod and Jen O’Brien tearfully spoke directly to their missing son in an emotional press conference.

“Nathan, your mom and dad, [brothers] Luke and Maximus, your whole family loves you,” said an emotional Rod O’Brien. “Nathan you are our superhero right now, and we’re going to bring you home very soon.”

Police asked anyone who was at the Liknes’ June 28-29 estate sale to speak to police at the Parkhill Community Centre starting July 3rd.

July 3 – Police investigators spent 12 hours at the community centre, having asked anyone who purchased an item at the Liknes’ estate sale to bring a photo of that item.

“We just want to make sure we’re aware of what was sold,” explained S/Sgt. Doug Andrus from the Calgary Police Service.

“In other words, if anything was taken after the sale was completed.”

Andrus said police looked at pictures of items sold at the estate sale, and ask people to provide fingerprints to eliminate fingerprints found at the crime scene.

July 4 – Police confirmed that a “violent incident” occurred inside the residence.

“Based on the evidence at the scene, somebody would be in medical distress,” said Andrus, adding he expected forensic lab results within several days to a week.

Investigators released two photos of a green truck that was seen “several times” in the area the night of the family’s disappearance, and ask the owner to come forward.

Parkhill Liknes Truck 1

July 5 – Police conducted an area search near the home of Nathan’s grandparents for the second time, to make sure nothing was overlooked in the initial search.

July 6  – Dozens of police officers searched an upscale residence in a rural area north of Calgary following a tip relating to the green truck. Douglas Garland, who neighbours said lives on the rural residence, was taken into custody for questioning on July 4, police revealed.

“We’re questioning the man and following the lead on the vehicle,” said Matthews. “He is a person of interest.”

Global News confirmed there’s a family connection between the Garland and Liknes families, but police didn’t comment on that information. Garland had a criminal history in British Columbia for producing his own amphetamines.

July 7 – Garland appeared in court on charges related to identity theft, but remained a person of interesting in the missing family case.

Global News learned that Alvin Liknes’ son is married to Garland’s sister. A family member said Liknes and Garland had a falling out several years ago, after a business deal ended badly.

Police questioned Garland, but was later released in connection to the case.

July 9 – Police confirmed a green truck was seized from Garland’s property but continue to ask the public to call police if they see any other trucks matching the description.

Garland appeared in court, facing an additional charge of possession of a stolen credit card. The Crown consented to release Garland on bail on July 11, if he could provide an address where he plans to live.

Police began searching the Spy Hill Landfill in northwest Calgary, to look through the waste as a precaution.

July 10 – Police searched a second landfill off of 17 Avenue and 68 Street S.E.

quantity of chemicals were located at the Garland home in Airdrie, but police said it was too early to speculate the identity of the chemicals.

Hundreds of people attended a candlelight vigil for the missing boy and his grandparents, just a short distance from the Liknes’ home.

July 11 – The Crown agreed to the release of Garland from custody Friday afternoon.

An Amber Alert remained in effect for five-year-old O’Brien and his grandparents.

July 14 – Garland is re-arrested and the Amber Alert is discontinued.

Calgary police say they have taken a man into custody, and murder charges will be laid Monday afternoon (two counts of first-degree murder related to the Liknes’ and one count of second-degree murder related to O’Brien).

Police said the bodies of the victims have not been found, but the evidence has convinced investigators it has turned from a missing persons investigation to a homicide investigation.

“There are still many questions left to be answered,” Hanson said. “Ultimately we want to be able to find the bodies, so the family can have final closure.”

Watch as Calgary Police Chief Rick Hanson explains the murder charges Monday afternoon:

July 15 – Garland is officially charged with two counts of first-degree murder in relation to the deaths of Kathryn and Alvin Liknes, and one count of second-degree murder in the death of Nathan O’Brien.

September 17 – Garland appears in court and his preliminary inquiry is set for May 19 to 29, 2015.

With files from Tamara Elliott and Melissa Ramsay

© Shaw Media, 2014

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