Warner Bros. has set a Oct. 19, 2012, release date for Ruben Fleischer’s period crime pic “The Gangster Squad.”

It’s the fifth title to be set for that date, joining Paramount comedy “Fun Size,” Lionsgate laffer “The Big Wedding,” FilmDistrict actioner “Parker” and Sony’s untitled Bin Laden project, directed by Kathryn Bigelow.

Shooting began three weeks ago on “Gangster Squad,” starring James Brolin, Ryan Gosling, Sean Penn, Emma Stone, Anthony Mackie, Giovanni Ribisi, Michael Pena, Robert Patrick, Frank Grillo and Holt McCallany. Kevin McCormick and Dan Lin are producing the Will Beall-scripted pic through their respective banners, Langley Park and Lin Pictures.

Project is based on the Los Angeles Times series ”Tales From the Gangster Squad,” to which Warner acquired the rights two years ago. The articles by Paul Lieberman chronicled the LAPD’s struggle with increasing crime and corruption in the 1940s by forming the so-called Gangster Squad to keep East Coast mobsters out of L.A.