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UPDATE: An arrest has been made in this shooting, police announced late Tuesday. Click here to read the latest on this case.

SAN JOSE — Security cameras at Booksin Elementary School were damaged by gunfire early Tuesday, marking the second such instance in three weeks at the Willow Glen neighborhood campus, according to police and school district officials.

A woman who lives near the school heard the sound of gunfire at about 4 a.m. and called 911, according to Peter Allen, a spokesman for the San Jose Unified School District. The woman briefly followed the gunman while on the phone with police dispatchers, but was told to stop the pursuit for her safety.

San Jose police conducted a home-by-home search of the surrounding neighborhood but did not locate a suspect. But they did recover a gun in a backyard and are determining whether it was the same weapon from the morning shooting, Officer Gina Tepoorten said.

A law-enforcement source told this news organization that a shotgun appears to have been used in Tuesday’s shooting.

Police later discovered two of the school’s surveillance cameras had been shot and damaged, but not destroyed, Allen said.

Over the Veteran’s Day weekend, a security camera at Booksin was damaged by gunfire. Allen said school officials did not immediately realize the damage was the result of gunshots. He added that investigators are reviewing footage from both incidents to determine “100 percent” the shootings are connected.

Though San Jose police assured school officials they could hold classes as usual Tuesday, the shootings left some parents worried enough to keep their kids home from school. On campus, students were kept indoors Tuesday “out of an abundance of caution,” Allen said.

“Any time you have a gun near campus, parents are completely justified in being concerned,” he said. “We’re concerned too. Their community and neighborhood is our community and neighborhood.”

“We’re doing everything we can to keep things secure,” he added. “The best thing we can do is prepare and be ready to respond should a more serious incident occur.”

Allen said the school district improved security measures at all of its schools thanks to a bond measure passed in 2012. The district has installed cameras at each of its schools, and changed all its door locks to handles that can be locked from the inside.

The school notified parents about the gunfire Tuesday morning and stated San Jose police would be present on campus throughout the day. One parent who spoke to this news organization said officers were not immediately visible during the morning dropoff.

Tepoorten affirmed police school liaison officers were on site, and that the department plans to maintain a presence at and around the campus in the coming days.

Sean Onderick, whose child attends Booksin, is concerned that whoever is shooting at the security cameras might have a more nefarious plan beyond vandalism. He said school officials and San Jose police should have a plan in place to ensure Booksin doesn’t join the list of American schools that experienced deadly shootings.

“There’s enough warning on this one, that shouldn’t occur,” Onderick said.

Staff writer Robert Salonga contributed to this report.