Sharing on behalf of the Alberta RCMP
UPDATE April 17, 2026
In an effort to help consolidate the activities of this missing person investigation, Consort RCMP are providing a brief summary of events and continue to seek assistance from the public in locating Diane Cooper.
Consort RCMP still believe the last known location of Diane Cooper was in Saskatchewan.
If Alberta licence plate LVA978 is seen on a grey Toyota C-HR XLE, please contact your local police to attend immediately.
Diane Cooper and her Dalmatian dog “Halo” are still missing. Diane may be disoriented and confused, so please contact your local police to respond to speak with Diane.
Summary of events:
April 6, 2026:
At 9:30 p.m., Diane Cooper reported missing to Consort RCMP;
COOPER left Calgary at approximately 3:30 p.m.;
Air tag ping provided location of Highway 12 near Veteran, Alta.; and
Alberta RCMP vehicle patrolled the area with negative results.
April 7, 2026
Cell phone pings and air tag not responding, but history shows:
o Diane’s key Fob was at 4607-50 Street in Stettler April 6, 2026, at 5:33 p.m.,
o Halo was at Palliser Trail in Hanna on April 6, 2026, at 6:59 p.m.;
o Diane’s vehicle was at 7559 Hwy 12 near Veteran on April 6, 2026, at 9:18 p.m.;
Surveillance photo provided of Diane Cooper fueling up her vehicle and the dog was with her; and
Alberta RCMP detachments roving patrols for ‘Be on the Look Out” (BOLO) for vehicle with Alberta licence LVA978, grey Toyota hatchback, for Diane Cooper with her dog.
April 8, 2026
Media Release sent out by Alberta RCMP within Alberta at 6:37 a.m., and by Saskatchewan RCMP within Saskatchewan at 9:42 a.m., to request public assistance in assistance with locating Diane Cooper;
Multiple tips from the public received by police and followed up, however nothing substantiated;
RCMP Detachments in Alberta and Saskatchewan continue BOLO vehicle patrols for Diane Cooper with negative results;
Missing Persons poster shared by Consort RCMP with neighbouring RCMP detachments in both Alberta and Saskatchewan; and
Alberta RCMP Air Services flight was completed with negative results.
April 9, 2026
Multiple tips from the public received by police and followed up, however nothing substantiated;
RCMP Detachments in Alberta and Saskatchewan continue BOLO vehicle patrols for Diane Cooper; and
RCMP Air Services Helicopter conducted patrols around Consort and Monitor with negative results.
April 10, 2026
Multiple tips from the public received by police and followed up, however nothing substantiated;
Multiple RCMP detachments BOLO for Diane Cooper; patrols made with negative results;
Saskatchewan RCMP Air Services requested and completed flight on Saskatchewan side of border, including Compeer, Major, Hwy 7, Marengo and Hoosier with negative results; and
Animal Shelters contacted in numerous locations with negative results;
April 11-12, 2026
Multiple tips from the public received by police and followed up, however nothing substantiated; and
Multiple RCMP detachments in Alberta and Saskatchewan have BOLO for Diane Cooper, patrols made with negative results.
April 13, 2026
Business in Sask., shared their surveillance footage of matching vehicle on their site in Hoosier, Sask., area on April 6, 2026, at 10:55 p.m.;
Multiple tips from the public received by police and followed up, however nothing substantiated;
Multiple RCMP detachments BOLO for Diane Cooper, patrols made with negative results; and
Alberta RCMP Air Services flight from Monitor to Alta./Sask. border with negative results.
April 14, 2026
Multiple tips from the public received by police and followed up, however nothing substantiated; and
Multiple RCMP detachments in Alberta and Saskatchewan have BOLO for Diane Cooper, patrols made with negative results.
April 15, 2026
Further review of Hoosier footage shows Diane Cooper driving her vehicle with dog in back, near Hoosier, Sask., on April 6, near 11 p.m.;
Police spoke with a person in Stettler, who stated on Apr. 6, they provided Diane directions to Calgary, but saw her leave heading east instead;
Multiple tips from the public received by police and followed up, however nothing substantiated;
Multiple RCMP detachments BOLO for Diane Cooper, patrols made with negative results;
Saskatchewan RCMP Search and Rescue advised of the investigation for missing person: Diane Cooper;
Saskatchewan Marshall Services and Surveillance teams have been notified; and
Saskatchewan RCMP Traffic Services have been notified.
Anyone with information as to Diane’s whereabouts are asked to contact Consort RCMP at 403-577-3001 or 310-RCMP (7267).
If you wish to remain anonymous, you can contact Crime Stoppers at 1‐800‐222‐8477 (TIPS), online at www.P3Tips.com or by using the “P3 Tips” app available through the Apple App or Google Play Store.
UPDATED April 14, 2026 with photos and new information
Consort RCMP now believe the last known location of Diane Cooper was in her vehicle travelling through Hoosier, Sask., on April 6, 2026, at 10:51 p.m.
Consort RCMP thank the media and public for their assistance in the search to locate 82-year-old Diane Cooper.
She is with her dalmation dog and travelling in her grey Toyota C-HR XLE with Alberta licence plate LVA978.
Police are sharing a photo of Diane’s vehicle travelling near Hoosier, as well as a photo of her dog.
Diane Cooper’s Dalmation dog
Photo of Diane Cooper’s vehicle travelling Hoosier, Sask
If Diane, her vehicle, or her dog, are seen, you are asked to contact your nearest police detachment.
Consort RCMP continue the search for Diane Cooper. Multiple resources are being deployed, including numerous RCMP detachments patrolling the roadways, and RCMP Air Services in both Alberta and Saskatchewan.
Anyone with information as to Diane’s whereabouts are asked to contact Consort RCMP at 403-577-3001 or 310-RCMP (7267).
If you wish to remain anonymous, you can contact Crime Stoppers at 1‐800‐222‐8477 (TIPS), online at www.P3Tips.com or by using the “P3 Tips” app available through the Apple App or Google Play Store.
UPDATED April 10, 2026
Consort RCMP are requesting assistance in locating 82-year-old Diane Cooper. She was reported missing to police on Apr. 7, 2026. Diane’s last known location is reported to be on April 6, 2026, around 9:30 pm in the Veteran area, between Coronation and Consort, on Highway 12.
Police have followed up on many leads and sightings reported by public; however, none have been substantiated.
Police are completing extensive patrols in the search for Diane. Police confirmed Diane Cooper fueled up at a gas station in Stettler, Alta., on April 6.
There is still concern for her well being. Diane is believed to be with her dalmatian dog and driving a grey Toyota C-HR XLE with Alberta licence plate LVA978. Police are sharing a photo of Diane filling up in Stettler.
Consort RCMP are receiving assistance from multiple RCMP resources within Alberta and Saskatchewan. Assisting RCMP resources include Alberta RCMP RTOC, Air Services, Missing Persons Unit, Intellex Unit, Provinicial Emergency Planning; RCMP Detachments assisting within Alberta include Consort, Coronation, Stettler, Oyen, Hanna, Three Hills, Killam, St. Paul, Lloydminster; RCMP Detachments assisting within Saskatchewan include Humboldt, Kindersley, Kerrobert, Macklin, Leader, and Turtleford. Outside agencies assisting are EMCON, Special Areas Counties, and the Rural Municipality of Heart Hills, Sask. Ground Search and Rescue is prepared in the event that Cooper’s vehicle is located.
Anyone with information as to Diane’s whereabouts are asked to contact Consort RCMP at 403-577-3001 or 310-RCMP (7267).
If you wish to remain anonymous, you can contact Crime Stoppers at 1‐800‐222‐8477 (TIPS), online at www.P3Tips.com or by using the “P3 Tips” app available through the Apple App or Google Play Store.
Consort RCMP are requesting assistance in locating 82-year-old Diane Cooper.
She was reported missing to police on Apr. 7, 2026.
Diane’s last known location is reported to be on April 6, 2026, around 9:30 pm in the Veteran area, between Coronation and Consort, on Highway 12.
She may possibly be in Alberta or Saskatchewan areas.
There is a general concern for her well being.
Diane is believed to be with her dalmatian dog and driving a grey Toyota C-HR XLE with Alberta licence plate LVA978.
Police are sharing a photo of Diane filling up in Stettler.
Diane Cooper is described as:
- Blue eyes
- White hair
- Slim build
- 5’1” tall
- 100 pounds in weight
- Wears eyeglasses
Anyone with information as to Diane’s whereabouts are asked to contact Consort RCMP at 403-577-3001 or 310-RCMP (7267).
If you wish to remain anonymous, you can contact Crime Stoppers at 1‐800‐222‐8477 (TIPS), online at www.P3Tips.com or by using the “P3 Tips” app available through the Apple App or Google Play Store.