SAN FRANCISCO — San Francisco's mayor has charged Sheriff Ross Mirkarimi with official misconduct stemming from his guilty plea in a domestic violence case involving his Venezuelan actress wife.

Mayor Ed Lee filed the charge Wednesday afternoon, a day after he announced that he would place Mirkarimi on suspension.

Lee said the sheriff's guilty plea to a misdemeanor false imprisonment charge fell "below the standards of decency and good faith."

A New Year's Eve dispute between the sheriff and his wife, Eliana Lopez, in front of their toddler son left her with a bruise on her arm.

Lee had given Mirkarimi the option of resigning or facing the misconduct probe. A defiant Mirkarimi refused to step down, saying his actions did not constitute official misconduct.