S AN MATEO COUNTY, CA — A San Mateo County sheriff who the board of supervisors recently voted to remove has now been accused of willful or corrupt misconduct by a civil grand jury, prosecutors said on Monday.

Formal civil grand jury accusations of corruption and misconduct mark the latest escalation of efforts to remove San Mateo County Sheriff Christina Corpus from office. The allegations announced Monday by the county’s District Attorney’s Office in a three-page filing includes one count of conflict of interest and three counts of retaliation.