California Highway Patrol officers and Orange County Fire Authority firefighters survey scene of a double fatal motorcycle head-on collision on Santiago Canyon Road near Irvine Lake, Sunday.

Orange County coroner's officials have identified the two men killed Sunday in a three-motorcycle crash on Santiago Canyon Road, one of whom was a veteran Los Angeles Police Department officer.

Miles McCune, 24, from Mission Viejo, who was riding a 1999 Honda, and Kent Alexander Carter, 60, of Rowland Heights, who was riding a 2007 Suzuki, sustained fatal injuries.

Two other people were hospitalized after the crash, which occurred about 4:30 p.m. Sunday on southbound Santiago Canyon near Jeffrey Road, the California Highway Patrol said.

Anthony Mendoza, 24, of Mission Viejo, who was riding a 2007 Honda, was taken to Western Medical Center in Santa Ana with serious injuries, CHP said.

Mendoza's passenger, Michelle Oelhafen, 25, of Mission Viejo was airlifted to Mission Regional with serious injuries.

Carter was driving his 2007 Suzuki northbound on Santiago Canyon at high speeds when he veered to the left and crossed over the double yellow line into oncoming traffic, authorities said.

The front of Carter's motorcycle struck the front of the 1999 Honda, which was traveling about 50 mph southbound on Santiago Canyon Road, CHP officer Devon Boatman said. Boatman said the 1999 Honda came to rest on the northbound lane.

Immediately after the first collision, Carter was struck again by Mendoza, who was riding with Oelhafen, his passenger, authorities said. Both were thrown from the motorcycle onto the southbound lane of Santiago Canyon.

Carter's Suzuki slid across the southbound lane and wound up on the right shoulder of the road.

Carter and McCune were pronounced dead at the scene.

Authorities say Carter spent nearly three decades with the LAPD, working patrol in the Wilshire, Rampart and 77th Divisions and as a vice officer before being promoted to a position at the department's training division, where he helped instruct thousands of officers.

Since 1998, Carter had been assigned to the LAPD's Labor Relations Division, working with numerous unions across the city. Carter is survived by his wife Sharon, his 27-year-old Son Preston, his 25-year-old daughter Courtney and his brother Darryl, a retired Los Angeles County Sheriff's Department.

"Kent was the most gracious, warm and considerate individual I have ever met," Lt. Andrew Neiman of the LAPD's Emergency Operations Division said in a written statement. "He loved his family, loved life and was looking forward to a wonderful retirement in a year. His passing will create a huge void in the department."

The California Highway Patrol is investigating the crash.

Click here to view the LAPD Press Release on the death of Officer Kent Carter.