Marie Ann McCann and Lyle Thomas McCann were last seen July 3. (RCMP)

Sept. 13

Police divers will investigate a small pond on a property near Nojack, Alta., in the search for Lyle and Marie McCann. Officials will not say what led them to search the property — a scrapyard — near Nojack, a town about 140 kilometres west of Edmonton.

Sept. 10

RCMP confirm they are searching a piece of private property south of Nojack, Alta., in their investigation. Meanwhile, a fundraising campaign boosts the reward for a tip that solves the disappearance of the missing Alberta couple to $60,000.

Aug. 31

The RCMP say Vader is officially considered a suspect in the case, but no charges have been laid.

The RCMP say Travis Vader is a suspect in the case, but no charges have been laid. (RCMP)

Aug. 10

Vader's new lawyer represents him in court. He remains in custody and faces a number of charges, including some related to theft, firearms and arson.

July 27

Vader's sister, Bobbi-Jo Vader, tells reporters that Vader was "tired" and "sick" when he appeared at her family's home on July 4, a day after the McCanns were last seen. However, she says she does not think her brother was involved in the couple's disappearance.

July 24

A vigil for the McCanns is held in St. Albert, Alta. Family members, friends and neighbours remain hopeful the couple will come home alive. Meanwhile, RCMP suspend the ground search so investigators can focus on pursuing tips from the public.

July 21

Searchers comb through a wooded area that was originally searched on July 17. The RCMP also spend the day searching the home where Vader was apprehended.

July 20

Vader does not appear at an Edson, Alta., court hearing regarding the outstanding warrants, but remains in custody.

The court grants the request of Vader's lawyer, Brad Thomlinson, to officially withdraw from all matters relating to Vader. Thomlinson tells the court he had not been able to reach his client since Vader missed a trial date in June.

The second man arrested the previous day is released without any charges.

The McCanns' SUV, bearing Alberta licence plate ZPK 289, was found July 16. (RCMP)

July 19

Vader is arrested at a home near Niton Junction, Alta., on outstanding warrants not tied to the McCanns' case. A second man, whose name police did not release, is also arrested at the scene. Both men are questioned about the couple's disappearance.

July 18

RCMP follow up on an estimated 150 tips, most of which come from people who say they have seen Vader. Meanwhile, search efforts continue for the couple.

July 17

An RCMP forensics team comb the area where the McCanns' SUV was found.

July 16

RCMP in Alberta find the SUV and say they are looking for a specific "person of interest." Police seek public help in finding Travis Edward Vader, 38, of no fixed address.

July 15

RCMP report multiple credible sightings of the green SUV in the Prince George area but back away from saying the vehicle was there, since it wasn't stopped or seen by police.

July 14

The Mounties put out amedia release asking the Bjorklunds to return to the detachment for a followup interview.

July 13

Diana Bjorklund and her father, Evert, go to the RCMP detachment in Prince George, B.C., to report having seen a vehicle on July 8 that matched the description of the McCann SUV. Bjorklund later tells CBC Radio that the RCMP weren't interested when they reported the information.

July 12

RCMP confirm the July 5 discovery of the McCanns' motorhome at Minnow Lake. Police return to the site to search for evidence.

July 10

The McCanns are scheduled to meet their daughter, Trudy Holder, at the Abbotsford, B.C., airport, but never show up. Holder calls the RCMP. The Mounties begin an investigation into the couple's disappearance. They search 259 square kilometres from the air, interview witnesses and review the couple's cellphone records and bank accounts.

July 5

Around 7 p.m., firefighters respond to a call about a motorhome fire at the Minnow Lake campground near Edson, Alta. No bodies are found inside, but police discover the registration linking the RV to the McCanns. The SUV is not at the scene. Mounties phone the McCann home and officers later knock on the door but find nobody at the house.

July 3

Lyle Thomas McCann, 78, and his wife, Marie Ann McCann, 77, leave St. Albert, Alta., headed for B.C. They are driving a green and white Gulf Stream Sun Voyager recreational vehicle and towing a light green Hyundai Tucson SUV. Lyle is filmed on surveillance video filling the RV's tank at a St. Albert gas bar around 9:30 a.m.

CBC News stories and reports from The Canadian Press