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There are nearly 200 unsolved homicides in San Joaquin County. A new sheriff's cold case unit is hoping to change that

The sheriff's office said cold case families will receive a letter soon asking them if they would like to be involved.

FRENCH CAMP, Calif. — Cheng Lor still wears a shirt with a picture of his brother, Joe, and his family, who were shot and killed nearly two years ago in Stockton.

It was Mother's Day 2018, when, inside a Sierra Vista neighborhood apartment in South Stockton, the Lor family gathered. Suddenly, shots rang out. 

Joe, his wife, Gina, and their daughter, Kayleen were killed in the shooting.

"In the time of the incident til now, we would never stop grieving, you know," Lor said. "We're still continually grieving."

Although it is a Stockton case and still an active investigation, it's cases like this one that a new San Joaquin County cold case unit will now get a second look.

Two detectives, San Joaquin County Sheriff's Sgt. Linda Jimenez and Irene Shelvay, will make up the unit, and their case load in immense.

RELATED: New cold case unit coming to San Joaquin County Sheriff's Office

"Our goal is to solve every single one of them. Is that realistic? We hope so," said San Joaquin County Sheriff Pat Withrow at a news conference at the department's French Camp headquarters.

There are approximately 200 cold case homicides dating back to 1964, nearly 100 sexual assault cases and nearly 50 missing persons cases.

Although it's a work in progress, the sheriff's department already has a link to it's website listing cold cases so far. Many of the older cases are in boxes and folders and need to be searched by hand and entered into the data base.

High profile cases like the infamous "Speed Freak Killers," Wesley Shermantine and Loren Herzog, who went on a 15-year killing spree starting in 1984, will get added attention.

"If my child, my dad, my wife, my daughter were missing, I would hope that I would have detectives that would not rest until they found my missing or deceased loved one," Withrow said.

RELATED: El Dorado Hills man exonerated in 1985 slaying thanks to new DNA

And, Cheng Lor is hoping that's the case for his family.

"It's always in our heart," Lor said. "And we're always thinking of them and we're hopeful that the system will find some way to to give us some closure."

The sheriff's office said cold case families will receive a letter soon asking them if they would like to be involved.

Sheriff Withrow also announced his department has received grant money to establish a "Rapid DNA" program. Withrow said that will enable his department to get DNA results within 90 minutes.

That added investigative tool will be available this summer.

To contact the Cold Case Unit, you can call 209-468-5087 or email them at coldcase@sjgov.org.

Follow the conversation on Facebook with Kurt Rivera.

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