Murder and firearm assault charges filed against Oakley young adult

CONTRA COSTA COUNTY, CA (Dec. 5, 2023) — The Contra Costa District Attorney’s Office has formally charged 18-year-old Sean Karp with murder, firearm assault, and related enhancements. The charges come in connection with the shooting death of 16-year-old Ke’Marion Tucker in Oakley on October 21.

A complaint filed in Superior Court in Martinez charges Sean Karp with one count of murder. It also includes an enhancement for intentionally discharging a firearm. Moreover, Karp faces three counts of assault with a semiautomatic firearm. These charges also carry enhancements pertaining to the use of a firearm (handgun) and inflicting great bodily harm on three individuals.

The charges stem from a shooting that occurred at a residence in Oakley during a party. In addition to Tucker being shot and killed, three other teens received injuries when Karp discharged his weapon.

On October 25, Oakley Police arrested another individual suspected of the shooting. They later released that suspect as the investigation continued. Investigators eventually identified Karp as the suspect.  Police arrested him on November 30 in Brentwood, with assistance from the U.S. Marshals Service.

Karp is in custody at the Martinez Detention Facility and will be arraigned on the charges on December 6 at 1:30 pm in Martinez. His bail has been set at $2,660,000.

Case No. 04-23-02043 | The People of the State of California vs. Karp, Sean.