Nutjob strolled into NYC court with loaded handgun tucked in his underwear

A lunatic with 18 prior arrests somehow waltzed into a Bronx courtroom Monday with a loaded handgun hidden in his underwear — and then threatened officers to “come see me outside,” according to a criminal complaint. 

The incredible security snafu happened when Jamal Frett, 26, snuck a black Ruger pistol locked and loaded with five rounds into the Bronx County Hall of Justice around 11:10 a.m. on Sept. 21,the complaint said. 

Frett then made his way up to Justice Guy Mitchell’s courtroom, where officers said he began to act disorderly, according to the complaint and sources.

A court officer noticed the serial crook using his phone and speaking loudly — a violation of courtroom rules — and deemed he was interrupting the proceedings, the complaint said. 

The officer said that as Frett was being escorted out of the courtroom, he began to threaten them. 

Frett began screaming “don’t f–king touch me, come see me outside you want some,” and tried to prevent officers from cuffing him, court papers said. 

While officers were subduing him they discovered the handgun he had hidden in his waistband. 

Officers arrested Frett and prosecutors hit him with a bevy of charges, including several criminal possession of a weapon charges. He was then remanded. 

The Bronx District Attorney’s Office directed The Post’s questions about court security to the state Office of Court Administration.

Meanwhile, the Unified Court System is already conducting an internal review, according to OCA spokesperson Al Baker, to figure out how a gun could have made its way into the secure facility.

Baker told The Post security camera footage showed Frett — a parolee from state prison who had been released in March — had walked through metal detectors before entering the building an hour before the gun was shockingly discovered.

Frett told officers he wore an ankle monitor on his leg, and was patted down after he set off a magnetometer, security camera footage also showed, according to Baker.

“Officers, using a handheld scanner, patted Mr. Frett down and discovered no immediate presence of a weapon,” the spokesperson said.

When they later discovered the gun, the NYPD and New York State Parole Bureau were immediately notified, he added.

Sources said it was unclear why Frett was in the Bronx courthouse on Monday, but it’s not his first brush with the law.

The repeat offender has a staggering 18 prior arrests, including 12 for felonies, according to sources.

He was last in court on Sept. 8 for a pending case where he and other brutes allegedly slashed a woman on the head while she was walking to the supermarket on April 30, sources said.

It was not immediately available whether Frett had an attorney.