The city's new "Street Czar" Mario Sierra is scheduled to be arraigned Tuesday after his arrest on suspicion of child molestation.
Sierra, 47, was recently appointed to Director of Transportation and Storm Water for the city of San Diego.
Sierra will be arraigned on Tuesday at 1:30 p.m., accused of molesting a child under the age of 14. His felony charge carries a maximum prison sentence of eight years.
Earlier this month, the city consolidated its street operations into one department, which is headed up by Sierra.
The site says a memo from the city's Chief Operating Officer, Jay Goldstone, says Sierra has been placed on unpaid administrative leave.
The American Federation of State, County and Municipal Employees Local 127 president Joan Raymond called the arrest surprising.
"But, he's innocent until proven guilty and the courts will have to do its process," Raymond said.
The union represents nearly 2,000 of the city's blue-collar workers.
Sierra was bailed out of jail around 9 p.m. Monday.