One person has been shot in the Mission District as San Francisco burst into spontaneous celebrations citywide tonight following the San Francisco Giants’ World Series victory against the Kansas City Royals, according to police.

The shooting occurred at 21st and Valencia streets, according to police spokesman Gordon Shyy.

The victim was shot in the arm and is expected to survive the injury. The suspect is at large and there is no description at this time, Shyy said.

Fans have taken over streets in various locations in the Mission District and Civic Center, and there have been some incidents of firecrackers being set off, according to Shyy.

Police have made a few arrests so far and are working to maintain the flow of traffic and keep fans safe, Shyy said.

The Giants defeated the Royals 3-2 in Kansas City, with Madison Bumgarner throwing five shutout innings after two stellar starts earlier in the World Series.

Both teams scored twice in the second inning and Michael Morse hit a broken-bat RBI single in the fourth to score Pablo Sandoval with what proved to be the winning run. Sandoval reached base all four times in the game.

San Francisco Mayor Ed Lee announced this evening that the city will hold a victory parade for the Giants on Friday.

Lee congratulated the Giants for their third World Series win in five years.

“…This world-class organization brought our city together as only our hometown heroes can,” Lee said in a statement.

“San Francisco waits with giant anticipation for the return of our hometown team so we can celebrate as one city with a parade down Market Street to welcome them home,” he said.

The parade is scheduled to start at noon at Market and Steuart Streets and continue down Market Street to Civic Center Plaza.

The team’s World Series-clinching wins in 2010 and 2012 also came on the road.