Prev Next
Lawrence Robb Costello
Agency patch

Lawrence Robb Costello

Royal Canadian Mounted Police — Ottawa, ON
Felonious
Canada flag Ontario flag
End of Watch August 10, 2018
The Vigil Panel 375 · Column 2 · Line 20 ›
Gender Male
Incident Media Service The Sacrifice Department 317

Incident

On August 10, 2018 45 year old Constable Lawrence Robb Costello and Constable Sara Mae Burns were shot and killed responding to a shots fired call. At approximately 7:00 am, the Fredericton Police Force received calls of shots being fired in the 200 block of Brookside Drive. Constables Castello and Burns responded and arrived on scene to observe two people lying on the ground. A lone gunman, shooting from a position of advantage from the third floor of the apartment complex shot and killed both officers. The area was locked down by police during which time the suspect was engaged in a shootout with the police. At approximately 9:45 AM, the suspect was taken in custody and transported to the hospital. Constable Costello was a 20 year veteran working on many teams and units within the Department, including being a detective, as well as being seconded to the RCMP Child Exploitation Unit. Robb is survived by his wife and four children. Our condolences go out to the family, friends and colleagues. As we start 2026, we can look back and note that we have been very fortunate to not have lost anyone in Canada to a Line of Duty Death (LODD) these last two years. Since the launch of the Memorial Rib… Photo: Memorial Ribbon Society Directors Shawn Coady & James Pearson with Tumbleweed Spirits Co-Owner Mike Patterson Police and Peace Officers’ Memorial Ribbon Society Directors Shawn Coady and …

Survivors

Robb is survived by his wife and four children.

In Our Keeping

Permanent identifier
neuraspine_01krbxtqp4ec6xf9517x7asfx9
Stewardship
Maintained by NeuraWeb Global Inc.
Added to badge.nw
August 2, 2026
Last updated
August 2, 2026

Honored here by 1 tribute.

Are you family? This record can be claimed and maintained by those who knew Lawrence. Claim this record.

This page is permanent and free. No fee to view it, no advertising, no tracking, and no account required. It will not be taken down.

Tributes

I never knew you. I am standing here anyway.
Officer Robb Costello served with the Royal Canadian Mounted Police.
Thank you for your service. Gone but never to be forgotten.
Rest easy, Robb Costello.

— S. Vincent Anthony, U.S. Army 1985-1993

Agency

Department Royal Canadian Mounted Police
Type Federal Police
Location Ottawa, Ottawa, ON
Platform Identity rcmp.fed.ca.gov.nw

Service Record

End of Watch August 10, 2018
Gender Male

Incident Details

Cause Felonious

The Sacrifice · Felonious

Lawrence is one of 67 officers killed feloniously in Canada, 16.8% of the 399 remembered there.

34,103 officers are remembered on this memorial. Each number below is one of them.

  3. See the roll
  4. See the roll
Compare against
I

Time

In 2018, 3 officers in Canada were killed feloniously, the 7th heaviest of 21 years on record. The heaviest was 2023, with 7.

Every year on record · Canada
II

When

August holds 9% of these deaths in Canada; March holds the most, 16.4%. Fridays: 16.4%.

By month
By day of the week
III

How

Felonious deaths account for 16.8% of all 399 deaths in Canada, the 2nd most common cause.

Every cause
Weapons recorded
IV

His people

Royal Canadian Mounted Police has at least 120 officers remembered here, Lawrence among them.

Across the years

Lawrence Robb Costello

Royal Canadian Mounted Police · End of Watch August 10, 2018

Where the Name Is Cut

↑