On Monday The Pulitzer Prize Board announced The Associated Press has won a Pulitzer Prize in investigative reporting for a series of stories on a secret New York Police Department program that spied on Muslims.

The prize was awarded to Matt Apuzzo, Adam Goldman, Eileen Sullivan and Chris Hawley for “their spotlighting of the New York Police Department’s clandestine spying program that monitored daily life in Muslim communities, resulting in congressional calls for a federal investigation, and a debate over the proper role of domestic intelligence gathering.”

Seth Freed Wessler, Colorlines.com’s investigative reporter, has been following the AP’s coverage as it has unraveled since 2011. You can read more of Colorlines and Wessler’s coverage by visiting the Colorlines.com/nypd-spying page.