More charges are expected to be filed against Wesley Brownlee, who is suspected of carrying out a series of killings in Stockton, California, San Joaquin Deputy District Attorney Tori Verber Salazar announced in a news conference following Tuesday’s court hearing.
Special circumstances could allow for Brownlee to face life in prison without parole, or possibly the death penalty if convicted.
In addition to the three murder charges filed Tuesday, police are also investigating two other murders and an attempted murder in San Joaquin County along with one more murder in Oakland that are believed to be connected, according to Salazar.
The seven incidents are connected via ballistics evidence, Salazar said, but the investigations are ongoing.
The gun believed to have been used in the murders was a so-called ghost gun, prosecutors say, and the weapon, which they say was found in the suspect’s possession, was the same caliber as the one used in each of the six murders.
Ghost guns are untraceable, self-assembled firearms, often put together with parts sold online, sometimes in as little as 30 minutes.
At the time of his arrest, “Mr. Brownlee was seen stalking various unsuspecting victims at the local city park,” the prosecutor said in court, insisting that his incarceration was imperative to ensure public safety.
“We have absolutely no reason to believe there is anyone else out there that you should fear in regards to these cases,” reassured Stockton Police Chief Stanley McFadden.
“We believe beyond a reasonable doubt that we have the right suspect in custody,” added Salazar.
Brownlee did not enter a plea, and is set to return to court on Nov. 14. CNN has reached out to his attorney for comment.