Prev
Incident
Police Officer Gregg Casillas was shot and killed as he attempted to arrest a man in the 1400 block of South Palomares Street following a vehicle pursuit.
The vehicle fled after officers attempted to stop it for reckless driving. The driver crashed into another vehicle before fleeing on foot and entering an apartment. As Officer Casillas and another officer attempted to make contact with the man he fired through the apartment door, striking both officers.
The officers were both transported to a local hospital where Officer Casillas succumbed to his wounds. The man surrendered after remaining barricaded inside his home for more than 15 hours. He was charged with Officer Casillas' murder as well as several counts of attempted murder of a peace officer.
Officer Casillas had served with the Pomona Police Department for six months and was still in field training at the time of the incident. He had been employed as a civilian with the agency for three years before entering the police academy.
Survivors
He is survived by his wife and two children.
In Our Keeping
- Permanent identifier
neuraspine_01krbxtnzcdq2by9sd9d46d4fh- 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 Greggory. 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.
Police Officer Casillas served with the Pomona Police Department.
Thank you for your service to the Pomona community. Gone but never to be forgotten.
Rest easy, Police Officer Casillas.
— 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.
Greggory is one of 974 officers killed feloniously in CA, 53% of the 1,839 remembered there.
Greggory is one of 15,743 officers killed feloniously in the United States, 57.1% of the 27,552 remembered there.
Greggory is one of 17,623 officers killed feloniously worldwide, 51.7% of the 34,103 remembered here.
34,103 officers are remembered on this memorial. Each number below is one of them.
Time
In 2018, 6 officers in CA were killed feloniously, the 63rd heaviest of 163 years on record. The heaviest was 1970, with 24.
In 2018, 66 officers in the United States were killed feloniously, the 109th heaviest of 213 years on record. The heaviest was 1921, with 248.
In 2018, 69 officers worldwide were killed feloniously, the 109th heaviest of 265 years on record. The heaviest was 1921, with 516.
Who
Greggory was 30. Of the 905 killed feloniously in CA whose age is recorded, half were between 30 and 43; the middle age was 35. Greggory had served 0.5 years; the middle length of service was 6 years.
Greggory was 30. 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. Greggory had served 0.5 years; the middle length of service was 6 years.
Greggory was 30. Of the 15,853 killed feloniously worldwide whose age is recorded, half were between 30 and 46; the middle age was 38. Greggory had served 0.5 years; the middle length of service was 6 years.
When
March holds 7.6% of these deaths in CA; October holds the most, 9.3%. Fridays: 15.1%.
March holds 7.5% of these deaths in the United States; December holds the most, 9.4%. Fridays: 14.3%.
March holds 7.8% of these deaths worldwide; December holds the most, 9.2%. Fridays: 14.3%.
How
Felonious deaths account for 57.1% of all 7 deaths at Pomona Police Department, the most common cause. The weapon recorded was gun; unknown type, 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 gun; unknown type, in 7.4% of these deaths.
Felonious deaths account for 57.1% of all 27,552 deaths in the United States, the most common cause. The weapon recorded was gun; unknown type, in 9.5% of these deaths.
Felonious deaths account for 51.7% of all 34,103 deaths worldwide, the most common cause. The weapon recorded was gun; unknown type, in 8.5% of these deaths.
His people
Pomona Police Department has 7 officers remembered here, Greggory among them.
Where
Where the Name Is Cut
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.
