We learned exclusively today that California Highway Patrol Officer Brett Oswald and Kaylee Weisenberg were not the only ones involved in the June crash that took Oswald's life.
It was revealed that Weisenberg, who is accused of hitting and killing Oswald with a car, was pregnant at the time of the crash.
She gave birth six weeks ago to a baby who has been present for both days of Weisenberg's preliminary hearing.
She is facing four charges, including murder and driving under the influence.
Investigators say Weisenberg tested positive for meth after the crash.
"With the concentrations that are here, it would be my opinion that Ms. Weisenberg was affected at the time by her methamphetamine use," said Barry Logan
, a toxicologist who testified.