She radioed that shots had been fired at 11:05 p.m., the Sheriff’s Office said. Within minutes, social media was abuzz with locals listening to the police scanner.

The Sheriff’s Office held a news conference Wednesday afternoon for Bay Area media that provided new information about Sunday’s fatal encounter on a rural south Napa County road. The names of the deputy and the dead motorist were released for the first time.

Hernandez Morales, 43, is a Napa resident and former farmworker. He had a criminal history in the county and had several aliases that had to be investigated before the Sheriff’s Office could release his name, Undersheriff Jon Crawford said.

A PowerPoint presentation showed five of Hernandez Morales’ Napa County jail mugshots taken between 2010 and 2016. He had been arrested for crimes such as having a concealed, loaded weapon, driving under the influence and assaulting a peace officer.

The Sheriff’s Office said it takes loss of life seriously, but Crawford said the department was proud of the composure and poise Jarecki showed while fighting for her life. She is doing as well as can be expected under the circumstances and could be gone anywhere from two to four weeks on paid administrative leave, Crawford said.