PITTSBURGH — Police were celebrating having to make only one arrest as fans poured into the streets following the Penguins’ Stanley Cup championship Sunday night, as the city prepared for a victory parade.

The parade will begin Wednesday at 11:30 a.m. downtown. A similar celebration after the Penguins’ 2009 championship — scheduled for exactly seven years to the same day — drew nearly 400,000 fans. Sunday night’s only arrest involved a fan who allegedly taunted a mounted officer’s horse with a skateboard.

That man, 20-year-old Tristan Hardinger, faces charges of disorderly conduct and taunting a police animal. He couldn’t immediately be located for comment Monday.