Luigi Mangione’s marathon pre-trial hearing finally came to a close Thursday — but it’ll be months before he learns what evidence Manhattan prosecutors can use against him in the bombshell murder case.

Manhattan Supreme Court Judge Gregory Carro said he will rule on May 18 as to what items — including a gun and notebook found in the accused killer’s backpack — jurors will be allowed to hear about when Mangione goes on trial for the execution-style shooting of UnitedHealthcare CEO Brian Thompson.

Carro will also decide whether Mangione’s alleged statements to cops and jail guards after his arrest at a Pennsylvania McDonald’s last December can be used as evidence in the high-profile case.

The nine-day evidence suppression hearing, which stretched out over the last three weeks, wrapped up after Mangione’s defense attorneys rested without calling anyone to the stand.

Prosecutors also rested their case Thursday after calling nearly 20 witnesses, who provided painstaking details of Mangione’s Dec. 9, 2024, arrest and ensuing bag search by Altoona, Penn. cops.

Several members of the Altoona Police Department testified about responding to the local McDonald’s after the fast food restaurant’s supervisor called 911 and said customers thought there was someone there who “looks like the CEO shooter from New York.”

Mangione, 27, was wanted at the time for the cold-blooded killing of Thompson on a Midtown street days earlier on Dec. 4, 2024.

Several pieces of potential evidence — including heart-pounding footage of when the accused CEO killer was asked by Altoona cops to pull down his mask at the McDonald’s — were seen for the first time.

Other bodycam footage showed the moment when one officer searched through Mangione’s backpack at the eatery — only to find a magazine hidden inside a pair of underwear.

A Greyhound bus ticket with the name “Sam Dawson” was also found among Mangione’s belongings at the time of the arrest — in addition to several notes revealing possible escape routes and a reminder to “pluck eyebrows” hidden inside his backpack, according to prosecutors.

The high-stakes hearing was called to probe Mangione’s claim that his rights were breached when police officers searched his backpack without a warrant after his arrest, and questioned him about the items before reading him his Miranda rights.

If the judge sides with Mangione, it could deal prosecutors a crippling blow by blocking them from showing a jury what was found inside the alleged killer’s bag — including the pistol allegedly used to gun down Thompson.

Mangione, who also has a federal case hanging over his head, has pleaded not guilty to all charges.

A trial date has not been set in either case.