Sonoma County sheriff's detectives have submitted to prosecutors their investigation of Santa Rosa police officers' actions in the shooting death of an unarmed, bipolar man.

Richard DeSantis, 30, died after being struck in the torso by a rifle shot and a handgun shot, an autopsy determined.

At least four officers responded April 9 to DeSantis' residence in the Roseland area after his wife called 911 to report that her husband had fired a gun into the attic.

She told dispatchers her husband was mentally ill and was hearing voices and said she had "secured the gun," a family member has said.

Sheriff's detectives investigating the shooting confirmed that police were warned DeSantis was having a mental health crisis, but said the officers didn't know if he was still armed when they confronted him in the driveway of his South Avenue home.

According to police, family and witness statements, DeSantis initially complied with orders to lie on the ground, but suddenly rose up and ran toward the officers on the west side of the driveway.

Santa Rosa Police Sgt. Jerry Soares, a 24-year law enforcement veteran, fired a "low-lethal weapon" that shoots a plastic projectile to subdue DeSantis, sheriff's detectives said.

When DeSantis kept coming, police said, officers on the scene fired conventional weapons, hitting him in the torso.

Sgt. Rich Celli, with 16 years of experience, Officer Travis Menke, with two years of experience, and Officer Patricia Mann, with one year of experience, each fired their weapons after DeSantis failed to stop.

Sheriff's Lt. Rob Giordano said the report, which was submitted to prosecutors on Monday, makes no conclusions as to whether the officers violated any laws.

"We gather any fact that is relevant to a criminal investigation," he said. "Ultimately, it's going to be the D.A.'s opinion."

Assistant District Attorney Christine Cook said prosecutors in her office will review the reports and determine whether there was any criminal conduct on anyone's part -- the officers or DeSantis.

She gave no time frame for when the prosecutors' review would be complete.

"Each case is dependent on its own facts and circumstances, so it's difficult to say when we receive a report when our conclusions will be complete," she said. "But we do attempt to review it and finish our reports in as timely a manner as possible."

The Sonoma County grand jury will receive the prosecutors' report, she said.

DeSantis' family has filed a federal civil rights lawsuit against the city and the officers, alleging that they used excessive force and were poorly trained. DeSantis' wife and children are seeking unspecified general and punitive damages against the city and the four officers. The case is pending.

DeSantis' death was among five fatal police shootings between February and May on the North Coast, four of which came in Sonoma County.

Faced with criticism of the shootings, elected officials and police have been meeting with advocacy groups and civil rights activists to discuss how mental health calls are handled and whether changes are needed.

DeSantis' mother-in-law said after the incident that he had stopped taking his medication the day before the shooting. That night, she said, he began to feel paranoid and fired into the attic thinking he was protecting his family.

The sheriff's investigation showed DeSantis fired 10 shots into the ceiling of the home.

You can reach Staff Writer Lori A. Carter at 568-5312 or lori.carter@pressdemocrat.com.