Detectives Seek Homicide Suspects – NR23138mc

June 1, 2023

June 7, 2023

North Hollywood: The Los Angeles Police Department’s Valley Bureau Homicide Detectives are seeking the public’s help to identify additional victims after the June 5, 2023 arrest of four suspects for 187PC-Murder. It is believed the suspects may be responsible for other armed robberies, specifically to underground casinos.  The suspects have been identified as:

Steven Hans Dunkel (Booking No. 6617994) 23 years old, resident of Glendora
Matthew Scott Riley (Booking No. 6618107) 29 years old, resident of Panorama
Michael John Blankenship (Booking No. 6618096) 52 years old, resident of Oxnard
Rudy Javier Madrid (Booking No. 6617977) 26 years old, resident of North Hollywood

The suspects’ residences were searched, and detectives believe the two assault rifles identified during the incident have been recovered as well as other evidence linking the suspects to the crime.

Stock image of vehicle used during the incident

Anyone with information is asked to contact Valley Bureau Homicide Detective Bucknell at 818-374-1928 or via email

North Hollywood:
The Los Angeles Police Department’s Valley Bureau Homicide Detectives are seeking the public’s assistance in identifying the suspects responsible for the death of a security guard.

On May 31, 2023, around 3:40 a.m., North Hollywood Area patrol officers responded to the 3300 block of Cahuenga Blvd for a radio call of a ‘man down’. Upon arrival, officers discovered an illegal gambling establishment, as well as a security guard suffering from multiple gunshot wounds. The Los Angeles Fire Department responded and pronounced the security guard deceased at scene.

Operations Valley Bureau Homicide assumed the investigation and determined that two male suspects with ski masks entered the rear entrance of the building, both armed with shoulder fired weapons. The security guard observed both suspects and removed a pistol from his waist. One suspect pointed his rifle and fired multiple times, striking the security guard. After searching the building for money, both suspects fled out of the rear door without any property.

Anyone with information about this case is asked to contact Operations Valley Bureau at 818-374-9550. During non-business hours, or on weekends, calls should be directed to 1-877-LAPD-24-7 (1-877-527-3247). Anyone wishing to remain anonymous should call the L.A. Regional Crime Stoppers at 1-800-222-TIPS (800-222-8477) or go directly to

Tipsters may also visit, under the Get Involved drop down, click on the “Crime Stoppers” menu to submit an online tip. Lastly, tipsters may also download the “P3 Tips” mobile application and select the L.A. Regional Crime Stoppers as their local program.