An autopsy found the Carmel teen died of a “gunshot wound to the head” in 2021.

Jessica Yesenia Quintanilla, 24, of Pittsburgh, is seen in Solano County Superior Court Branch 11, Judge William J. Pendergast’s courtroom, in November 2021, where she will be arraigned on charges related to the murder of Leilani Beauchamp, 19, from Carmel, who was reported missing on October 30, 2021. (Reporter File/Joel Rosenbaum)

A forensic pathologist who performed an autopsy on a 19-year-old woman killed in late October 2021 in Fairfield said her death was the result of a “gunshot wound to the head.”

Dr. Arnold Josselson on Monday told jurors at the Quintanilla siblings’ murder trial, which entered its fourth day in Solano County Superior Court in Fairfield, that the bullet entered the right side of Leilane Beauchamp’s head, exiting the back of her head, but also on the right side.

Deputy District Attorney Ilana Shapiro, who is leading the prosecution, then showed several graphic photographs taken during an autopsy conducted Nov. 3, four days after Beauchamp was allegedly shot and killed in Fairfield by Jessica Yesenia Quintanilla.

Josselson, a prominent Fairfield physician who often testifies in murder trials, said a single bullet passed through Beauchamp’s brain and the entry wound fractured her skull, with the bullet’s path being “from front to back in a downward direction.”

He also testified that he found some soot near the entrance hole, indicating that the shot was fired at close range, approximately one foot.

Quintanilla’s defense attorney, San Francisco lawyer William Alan Welch, briefly questioned Josselson when she took the witness stand in Department 11 of the Justice Center, asking only about her height (she was 5 feet tall) and weight (122 pounds).

Quintanilla, 24, of Pittsburgh, allegedly fatally shot Beauchamp in the head in the early morning hours of Oct. 30 as Beauchamp lay in bed with Juan Parra-Peralta — then an active-duty airman at Travis Air Force Base — at a home on Cascade Lane in Fairfield.

Her brother, Marco Antonio Quintanilla, 30, also of Pittsburgh, previously convicted of attempted murder, is on trial in the case and charged with accessory after the fact. He is represented by Laurie D. Saville, also a San Francisco attorney.

The siblings sat at the defense table during the morning hearing, and both appeared to take notes during the proceedings before Judge William J. Pendergast.

Earlier in the morning, Shapiro called as a witness Brian Hoskins, then a detective sergeant with the Monterey County Sheriff’s Office in 2021, who began the investigation in the predawn hours of Nov. 1, days after Beauchamp’s fatal shooting. when a Fairfield officer contacted him about a body on Corral De Tierra Road in Salinas.