LOS ANGELES -- USC made it official Monday afternoon, hours after the news first broke: Washington coach Steve Sarkisian is the Trojans' new head football coach. And interim coach Ed Orgeron, a longtime USC assistant and recruiting coordinator, has resigned.

Orgeron told school officials he was "leaving USC to pursue head coaching opportunities."

Various media reports said Orgeron was "outraged" by athletic director Pat Haden's decision to go with Sarkisian.

USC had a record of 6-2 with Orgeron as interim head coach. Haden didn't immediately announce who will coach the Trojans in their bowl game, but at a team meeting players were informed that it would be offensive coordinator Clay Helton.

Sarkisian, a Los Angeles-area native and former Trojans assistant coach, immediately left Washington. He also could bring a handful of Huskies assistants with him to USC.

"We conducted a very exhaustive and thorough search, pinpointing about 20 candidates and interviewing five of them," Haden said. "We kept coming back to Sark. He is the only one who was offered the job."

Sarkisian said the Washington program, 0-12 the season before he took over, "is in a better place now than when we arrived, and I am proud and thankful of the players for that.

"That said, I am extremely excited to be coming home to USC and for the opportunity that USC presents to win championships. I can't wait to get started."

Sarkisian went 34-29 in five seasons at Washington.

Meanwhile, UCLA coach Jim Mora is expected to be on the shortlist for the Washington job. Mora, who played for the Huskies and was a graduate assistant under Don James, has expressed interest in the job before.

Mora was recruiting Monday and would not comment.

The Associated Press contributed to this report.