Family members say Erin Valenti, CEO of Salt-Lake City-based app developer Tinker Ventures, was last seen in Palo Alto, Calif. She was supposedly on her way to the San Jose airport to head home to Salt Lake City.

Valenti’s husband Harrison Weinstein wrote on Facebook that phone activity suggested Valenti was driving in San Jose. She never returned her rental car or made it on her flight back to Utah, and she’s had no phone or credit card activity since Monday.

San Jose police spokesman Sgt. Enrique Garcia told Fox 13 Friday that “at this time, we are treating this case as a voluntary missing person.” However, Valenti’s family says she seemed to be distraught on the night she disappeared. Weinstein and Valenti’s parents told the station that they spoke to her on the phone Monday and she seemed manic, though she has no history of mental illness.

“I get that people have the right to disappear, but that’s not this,” Weinstein told KTVU. “Everything she said she was planning on coming home. She was trying to get to the airport. She’s not thinking clearly.”

“She seemed confused. We said, ‘Did you drink anything?  Did anybody give you anything?’ and she said, ‘No,'” her mother Agnes Valenti said, “But my daughter is so smart and she is such a strong independent lady and this has never happened before.”

Valenti is described as 5-foot-4 with blond hair. She was last seen wearing a white T-shirt and jeans.

The San Francisco Field Division of the Bureau of Alcohol, Tobacco, Firearms and Explosives was responding to the scene, officials said. A local council member told Fox News in an interview that there were three fatalities and about a dozen injured. However, law enforcement did not confirm those numbers.

The scene is still considered active. Police were searching for more than one suspect, The Wall Street Journal reported.

United States President Donald Trump posted on Twitter– citing reports– that a shooter has not been apprehended. Gov. Gavin Newsom called the incident “horrific.”

“Tonight, CA stands with the Gilroy community. My office is monitoring the situation closely. Grateful for the law enforcement’s efforts and their continued work as this situation develops,” he tweeted.

The San Francisco Chronicle reported”multiple people,” but there were few immediate details. The Los Angeles Times reported that the festival draws tens of thousands of people a year. The annual garlic festival, a three-day celebration featuring food, cooking competitions and music that attracts more than 100,000 people.

Personal videos posted to Twitter clearly looked to show large crowds evacuating the festival. Many witnesses said the shots sounded like fireworks and there was confusion. The first shots were fired near an amphitheater, one witness said.

One witness told KTVU that he heard what he believed was 30 rounds. Some witnesses said the gunman was in army fatigues.

The festival has been a nationally known three-day event drawing thousands of garlic lovers. Sunday was the final day of the festival.