FAIRFIELD, Calif. (KGO) -- A Fairfield woman was arrested Tuesday in connection with the death of her 2-month-old baby over the summer.



Shelby Frederick, 21, was arrested on charges of assault of a child causing death after investigators determined the infant died from acute methamphetamine poisoning.



The baby was taken Northbay Medical Center on June 18 with symptoms, which included choking and difficulty breathing. Health officials tried to administer care, but the baby passed away. The infant was then released to the Solano County Coroner's office.



Based on results from the Solano County Coroner's office, Fairfield police began an investigation into the death of the infant. The investigation included the search of a home on the 2500 block of Baltic Drive in the City of Fairfield.



Police determined that Frederick had full custody of her child at the time of its death. She was booked into Solano County Jail. She is currently five months pregnant.



This is an ongoing investigation.



Detectives located her today in Vallejo where she was arrested and later booked into Solano County Jail.



Anyone with information on the case is asked to call the Police Department's major crimes unit at (707) 428-7600, 24-hour tip line at (707) 428-7345 or Solano County Crime Stoppers at (707) 644-7867. Callers can remain anonymous.