San Francisco's incoming archbishop for the Roman Catholic Church was arrested on drunken-driving charges early Saturday in San Diego, according to news reports.

Bishop Salvatore J. Cordileone, 56, currently serving the Oakland diocese, is to be installed in San Francisco in October. Pope Benedict XVI appointed him last month.

Police said Cordileone, a San Diego native who was also an auxiliary bishop there from 2002 to 2009, was booked on a misdemeanor charge of driving under the influence and later posted bail, U-T San Diego says. He was stopped at a checkpoint near San Diego State University, the Associated Press says. The San Diego city attorney's office said it had not received an arrest report.

No statements yet from either the San Francisco or the Oakland dioceses.

AP writes that during his service in San Diego four years ago, Cordileone "was instrumental in devising" Proposition 8, which banned same-sex marriage, and then "raising Catholic dollars to qualify it for the ballot." He was quoted in the National Catholic Register as saying same-sex marriage is "a very serious social experiment that will have dire consequences."

Over the weekend, San Francisco radio station KCBS featured an interview with Cordileone about his new job.