Police Identify Concord Woman Believed Killed By Son, 18

CONCORD, CA — A woman found deceased in her Concord home earlier this month was identified as 58-year-old Elizabeth Berry, a spokesman for the Concord Police Department said Tuesday. Officers with Concord PD were dispatched at 9 p.m. Feb. 5 to Berry's home in the 3000 block of Treat Boulevard when her 18-year-old son called 911 and told a dispatcher he just killed his mother, police said.

In an emailed response to Patch, Concord police Cpl. David Petty identified Berry's son as Harrison Mercier.

According to Contra Costa County jail records, Harrison William Mercier is being held in the Martinez jail in lieu of $1.03 million bail.

The day of Mercier's arrest, he was waiting outside the family's residence when officers arrived, Concord police Lt. Sean Donnelly said.

Officers went inside the home where they found Mericer's mother dead.

Jail records show Mercier was arrested at 9:34 p.m. Feb. 5 in connection with the homicide investigation.

Prior to Feb. 5 and dating back at least three years, Concord police had no calls for service at the apartment where Mercier lived with his mother, Petty told Patch.

Mercier is due in court at 8:45 a.m. Wednesday.

Patch also sent a request for information Tuesday to the Contra Costa County District Attorney's Office. Should any further information about the case become available, it will be added to this article.