(KRON) -- A woman who died in custody at Maple Street Correctional Center in Redwood City was identified Tuesday as 31-year-old Markeisha Monique Renee Blount.

Blount died on Sept. 29 from a suspected fentanyl overdose, the San Mateo County Sheriff's Office said. Detectives determined that another female inmate brought fentanyl into the jail that ultimately killed Blount, and they declared her death a homicide, SMCSO said.

The homicide suspect was identified as 34-year-old Ashley J. Gromnicki. Detectives believe that she smuggled the drugs in, and supplied the drugs to Blount.

Gromnicki had previously been arrested for narcotics and theft crimes. She will remain in custody while the District Attorney’s Office reviews the case before filing charges.

Sheriff Christina Corpus said, "We ar

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