Italy’s most infamous act of postwar political terrorism, the Piazza Fontana massacre, will get its first cinematic depiction in a high-profile pic being developed by Cattleya, the indie stable in which Universal holds a stake.

The Piazza Fontana bombing in Milan in 1969 at the headquarters of a big national bank killed 17, wounded 88, and triggered a series of other deadly bombings in other Italian cities over the ensuing three decades, now known as country’s “strategy of tension” period.

The bombings have been widely ascribed to the country’s secret services as a ploy to prevent the country’s Communist party from taking power, with the CIA also reportedly involved.

Cattleya topper Riccardo Tozzi described the still-untitled Piazza Fontana project as “a big ‘JFK-like’ film with an A-list cast.”

“Most of the main backstory is finally now known. So the time has come to come to terms with the past and reach some kind of closure,” Tozzi said.

Tozzi added that the deaths of police commissioner Mario Calabresi, one of the officers on duty at the time, who was subsequently assassinated, and anarchist Giuseppe Pinelli, an initial suspect who died after falling from a fourth floor window in the police station where he was being kept for questioning, will both be included in the pic.

Top-notch Italo scribe duo Stefano Rulli and Sandro Petraglia (“The Best of Youth,” “Crime Novel”) are penning the fact-based screenplay.

Director and cast are still being decided.

Tozzi said Cattleya is currently setting up two or three other high-profile pictures with Italian talent but destined for the international market, which they will discuss with Focus Features in Cannes as projects that Focus can board as a co-producer and promote internationally.