SAN FRANCISCO (CBS SF) — San Francisco police on Wednesday released a video of suspects believed to be responsible for the arson of a Municipal Railway bus after the Giants’ World Series victory on Sunday and are asking for the public’s help in identifying them.

The 8X-Bayshore Express Muni bus was torched and vandalized around 12:30 a.m. Monday at Market and Third streets.

The video, recorded by a witness, appears to show two suspects lighting the bus on fire after it had stopped on Market Street. Eight passengers and the driver had been on board the bus but got out before the vandalism started.

Gregory Tyler Graniss, 22, was arrested Tuesday after a San Francisco Chronicle photo showed a man smashing the windshield of the Muni bus with part of a barricade.

Social media helped spread the photo and led to tips identifying Graniss as the suspect. He was arrested at his home and has since confessed to the vandalism, police Chief Greg Suhr said at a news conference Wednesday.

San Francisco Police said these two men set fire to a Muni transit bus on October 29, 2012. (SFPD)

Suhr said he hopes the same help from social media will lead to the identification of the two suspects who burned the bus.

“We will seek them and we will arrest them,” he said. “There’s no place for this in any city, let alone San Francisco.”

Suhr said it was unclear from the video what the suspects used to light the bus on fire.

“We’re hopeful they’ll tell us when they’re wearing handcuffs,” he said.

(Copyright 2012 by CBS San Francisco and Bay City News Service. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)