SAN MARCOS — The trial for a 36-year-old man accused of calling in multiple bomb threats to Palomar College last fall began May 1 in a San Diego Superior Court.

William M. Hall II is charged with six felony counts of calling in a false bomb report to the San Marcos college.

Prosecutors say on three separate occasions last fall — Sept. 13, Sept. 19 and Oct. 18 — Hall reported a bomb threat to the college, which resulted in the evacuation and closure of portions of the campus, including the children’s day care center.

Deputy District Attorney Brendan McHugh told jurors in his opening statement that Hall’s actions were “intrusive” as well as disruptive to campus life.

At a preliminary hearing in February, Lee Martin, a sergeant with the Palomar Police Department, testified that records from Hall’s cell phone revealed that calls had been placed to the campus within minutes of the purported bomb threats.

Hall, a former student at Palomar College, was working in food services at the campus cafeteria at the time of the threats, Martin said.

Three dispatchers who fielded the phony phone calls identified Hall as the caller after authorities played a clip of his voice, the sergeant said.

In his opening statement to jurors, defense attorney John Lee said the three dispatcher’s identification of Hall’s voice will seem “pretty” convincing but that all the evidence needs to be evaluated, including information that investigators ignored evidence that other individuals may have had access to Hall’s phone at the time.

Lee said his client became a “pariah and pawn” in law enforcement’s investigation of the case.

If convicted, Hall faces up to nine years and four months in prison.