The head of the Marin County coroner’s office has been arrested on a warrant charging him with four felony counts of child molestation over a period of seven years.

Chief Deputy Coroner Darrell Harris, a San Rafael resident, was found in Eureka on Thursday afternoon after authorities issued an alert to law enforcement agencies to look for him. Eureka police detained him without incident and booked him into the Humboldt County Jail.

Harris remained in custody there Saturday in lieu of $750,000 bail. Marin County District Attorney Ed Berberian said Harris is scheduled to be arraigned Monday in Marin Superior Court.

The alleged crimes occurred in Marin, but the case was investigated by the Santa Rosa Police Department because of Harris’ law enforcement ties in Marin. Santa Rosa investigators could not be reached Saturday, and the affidavit in the case is under seal, but the criminal complaint filed by the Marin County District Attorney’s Office offers some details.

The complaint, filed on Friday by Chief Deputy District Attorney Dori Ahana, alleges one count of continuous sexual abuse of a girl under 14 years old. The charge alleges the molestation occurred on at least three occasions between May 2008 and May 2011.

The other counts, which include charges such as lewd acts and oral sex with a minor, cover various periods from 2011 to 2015. The girl was between the ages 14 and 17 during that span.

A fifth count, a misdemeanor charge of sexual battery, involves the same alleged victim. It covers a period from May 2015 to March 2017.

Harris is in his middle to late 40s.

The weightiest charge — continuous sexual abuse of a child — carries a potential sentencing range of six to 16 years in state prison. The charges also carry the possibility of lifetime registration as a sex offender.

Harris has worked for Marin County since 2003, first as a death investigator in the independent coroner’s office. He was named investigator of the year by the California State Coroners’ Association in 2008.

In 2011, when the coroner’s office merged into the sheriff’s department, Harris remained on the staff.

The consolidated office was run initially by a sheriff’s lieutenant. In October 2015, Harris was promoted to chief deputy coroner and placed in charge of the office.

Before joining the Marin office, Harris was a coroner’s investigator in Alameda County.

Harris is also a part-time commercial photographer who publishes under the name D. Alan Harris.

Sheriff Robert Doyle said the department is reviewing the evolving situation and has not made a decision on Harris’ employment status.

“Darrell has been an exemplary employee,” Doyle said Saturday. “We’re saddened by the allegations.”