James Mussenden, who has been city manager since 2006, was one of 30 people arrested in the prostitution sting.
The 59-year old Mussenden sent a letter of resignation to the deputy city attorney, dated effectively the day of his arrest, according to an Associated Press report.
Mussenden said in his letter that he was leaving his position without severance or other compensation, according to The Los Angeles Times.
The El Monte City Council unanimously voted to make Rene Bobadilla the Interim City Manager. Bobadilla, the Deputy City Manager for Community Development, will be temporarily appointed for 90 days.
Bobadilla told The Los Angeles Times, “It’s bittersweet.”
“Not exactly the way you’d like to become interim city manager.”
The sting was done on Thursday night on a main road in Pomona that had received complaints of prostitution.