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Incident
Police Officer Shaun Diamond succumbed to a gunshot wound sustained the previous day as he and members of the Pomona SWAT team attempted to serve a search warrant.
Officer Diamond was the breach officer as the team attempted to make entry into the home in the 100 block of San Marino Avenue in San Gabriel. As they breached the storm door, the subject inside opened the main door and fired a single shot from a shotgun, striking Officer Diamond in the back of the neck. The shot also wounded the subject's father in the arm.
Other officers immediately pulled Officer Diamond to a safe location, and he was transported to Huntington Memorial Hospital in Pasadena, where he died early the following morning. He had remained on life support so his organs could be donated.
The subject was taken into custody at the scene and charged with the murder of a police officer with special circumstances. He pleaded no contest to voluntary manslaughter and assault with a firearm on a police officer and was sentenced to 10 years.
Officer Diamond had served with the Pomona Police Department for eight years and had previously served with the Los Angeles Police Department and the Montebello Police Department.
In February 2015, Downtown Plaza was renamed to Diamond Plaza with unanimous support. In October 2016, I-10 between 57 Freeway and Towne Avenue was renamed Pomona Police Officer Shaun Diamond Memorial Highway.
Survivors
He is survived by his son, daughter, and parents.
In Our Keeping
- Permanent identifier
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- Maintained by NeuraWeb Global Inc.
- Added to badge.nw
- August 2, 2026
- Last updated
- August 2, 2026
Honored here by 1 tribute.
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Tributes
I never knew you. I am standing here anyway.
Police Officer Diamond gave the Pomona Police Department 16 years.
Thank you for your service to the Pomona community. Gone but never to be forgotten.
Rest easy, Police Officer Diamond.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
The Sacrifice · Felonious
Pomona Police Department has lost 7 officers; 4 of them killed feloniously.
Shaun is one of 974 officers killed feloniously in CA, 53% of the 1,839 remembered there.
Shaun is one of 15,742 officers killed feloniously in the United States, 57.1% of the 27,551 remembered there.
Shaun is one of 17,622 officers killed feloniously worldwide, 51.7% of the 34,102 remembered here.
34,102 officers are remembered on this memorial. Each number below is one of them.
Time
In 2014, 7 officers in CA were killed feloniously, the 50th heaviest of 163 years on record. The heaviest was 1970, with 24.
In 2014, 63 officers in the United States were killed feloniously, the 119th heaviest of 213 years on record. The heaviest was 1921, with 248.
In 2014, 66 officers worldwide were killed feloniously, the 117th heaviest of 265 years on record. The heaviest was 1921, with 516.
Who
Shaun was 45. Of the 905 killed feloniously in CA whose age is recorded, half were between 30 and 43; the middle age was 35. Shaun had served 16 years; the middle length of service was 6 years.
Shaun was 45. Of the 14,219 killed feloniously in the United States whose age is recorded, half were between 31 and 47; the middle age was 38. Shaun had served 16 years; the middle length of service was 6 years.
Shaun was 45. Of the 15,853 killed feloniously worldwide whose age is recorded, half were between 30 and 46; the middle age was 38. Shaun had served 16 years; the middle length of service was 6 years.
When
October holds 9.3% of these deaths in CA, more than any other month. Wednesdays: 11.8%.
October holds 7.9% of these deaths in the United States; December holds the most, 9.4%. Wednesdays: 12.9%.
October holds 7.8% of these deaths worldwide; December holds the most, 9.2%. Wednesdays: 13.2%.
How
Felonious deaths account for 57.1% of all 7 deaths at Pomona Police Department, the most common cause. The weapon recorded was shotgun, in 25% of these deaths.
Felonious deaths account for 53% of all 1,839 deaths in CA, the most common cause. The weapon recorded was shotgun, in 3.6% of these deaths.
Felonious deaths account for 57.1% of all 27,551 deaths in the United States, the most common cause. The weapon recorded was shotgun, in 7% of these deaths.
Felonious deaths account for 51.7% of all 34,102 deaths worldwide, the most common cause. The weapon recorded was shotgun, in 6.3% of these deaths.
His people
Pomona Police Department has 7 officers remembered here, Shaun among them.
Where
Where the Name Is Cut
National Law Enforcement Officers Memorial · Panel 14-E
What is kept
Photographs, film, sound and papers — what survived a life.
Others Who Wore This Badge
6 officers from Pomona Police Department are honored on badge.nw.
