COQUILLE - Circumstances surrounding a shooting in the Allegany area Saturday evening that sent two men to the hospital and resulted in the arrest of the Coos County medical examiner remain sketchy as authorities try to piece together the details.

Dr. William David Hosack, 63, of Coos Bay, was arraigned in a Coos County courtroom late Monday afternoon and charged with one count of second-degree assault and one count of third-degree assault in connection with the incident.

Hosack is accused of shooting Justice Mason Cloud, 21, of Charleston and Josh Andrade, 19, of Coos Bay, during an altercation that took place on property located off the Coos River Highway, between Allegany and Golden and Silver Falls State Park.

Oregon State Police Sgt. Rick Carlton did outline some details in the case.

On Saturday afternoon, about a half-dozen people in their 20s were sitting in several cars on the side of a rural road near Hosack's property, Carlton said. Another carload drove by and bothered the first group in some way, he added, so they followed the car. Both groups happened to wind up at Hosack's place, where four people started a fight.

"It went downhill from there," Carlton said.

Hosack, the county's medical examiner for 15 years, apparently tried to intervene.

"He was attempting to stop this altercation when the gun went off," Carlton said. It's unclear whether Hosack meant to fire the gun.

Carlton said investigators still must interview other witnesses before drawing any conclusions.

According to a press release issued by the Coos County District Attorney's Office, emergency dispatchers received a call about 5 p.m. on Saturday that someone had been shot and was being driven to the hospital. Paramedics intercepted the vehicle and then took Cloud to Bay Area Hospital.

Cloud had a single gunshot wound to his chest and Andrade, who was driving the vehicle, had been grazed on his head by a bullet, according to Linda Andrade, Josh's mother, who appeared at the arraignment with a friend.

Cloud was listed in fair condition Monday morning and Andrade was treated and released on Saturday night, according to a hospital supervisor.

Hosack was arrested by police without incident later Saturday evening at his Coos Bay residence, 1030 N. 10th St.

Monday afternoon, the tall, heavy-set man with gray hair appeared unable to hear the proceedings as he appeared before Douglas County Circuit Court Judge Joan Seitz, who is presiding over the case.

Clad in prison garb and wearing hearing aids in both ears, Hosack was subdued and looked tired after spending two nights in the Coos County jail. He did not speak during the arraignment, except to ask his Coos Bay lawyer, Roger Gould, what the judge had said.

As chief medical examiner for the county, Hosack testifies at trials as an expert witness. He also works as a pathologist at Bay Area Hospital, where he has been employed since 1975. Because of his ties to the county, Seitz was called in from Douglas County to hear the case and Eric Wasmann from the state Attorney General's Office stepped in as a special prosecutor.

Wasmann listened to the proceedings via telephone, while Seitz drove from Roseburg and sat in Judge Michael Gillespie's courtroom, where the arraignment was held.

About 10 people were in the courtroom to watch the hearing. Gould was assisted by his son, attorney Adam Gould.

Police originally charged Hosack with one count of first-degree assault, two counts each of second-, third- and fourth-degree assault and one count of negligently causing a wound to another, according to a Coos County jail spokesman.

"Mr. Hosack acted reasonably in defending his family, his friend and himself during an attack of trespassers on his Coos River property," Gould said after the hearing.

Linda Andrade, said her son told her that he, Cloud and two other young men were on what they thought was Weyerhaeuser property off Coos River Highway with their girlfriends and a baby Sunday afternoon when a car traveling by sprayed gravel at the group. The group followed the car and eventually an altercation between Andrade and Hosack ensued, Linda Andrade said.

Andrade said her son is short and slightly built and that no one in the group had any weapons.

Hosack was released on his own recognizance after the hearing on the condition that he have no contact with Cloud, Andrade or any other witnesses in the case; that he refrain from consuming alcohol and that he not have contact with medical records or provide treatment services to Cloud, who is still in the hospital where Hosack is employed.

Hospital Chief Executive Officer Dan Smith could not be reached for comment after the arraignment.

Gary Stafford, chief investigator with the State of Oregon Medical Board, said if Hosack is convicted of a felony, his medical license will automatically be revoked.

"We'll just wait and see how the criminal charges shake out," Stafford said. "We're going to keep our eyes on it."

Hosack is scheduled to appear at a preliminary hearing on March 4 at 8:30 a.m. at the Coos County Courthouse.

- The Associated Press contributed to this report.