Alleged Grand Central slasher cries out for his mom at first court appearance for unprovoked NYC attacks: ‘I didn’t know you were here!’

The man accused of two unprovoked slashings at Grand Central Terminal on Tuesday night cried out for his mother at his Christmas Day court proceeding — as a Manhattan judge ordered him held on $150,000 bail.

Jason Sargeant, 28, was arraigned on charges of assault and attempted assault for what prosecutors described as “incredibly serious” knife attacks on two people in the city’s biggest train station on Christmas Eve.

After his brief Wednesday night appearance, Sargeant, a Brooklyn native, noticed that his mom was in the courtroom.

“Wait, mom, I didn’t know you were here! I didn’t know you were here!,” he called out frantically as he was swarmed by court officers.

“Wait! Wait! Wait! Wait!,” he wailed as the officers dragged him out of the courtroom.

About 24 hours earlier, Sargeant “was screaming ‘f–k all of these people’” before he allegedly slashed a 42-year-old man across the left wrist on the stairs of Grand Central’s southbound entrance, prosecutors said.

“The victim was bleeding profusely on the scene,” an assistant district attorney said in court. “He suffered a deep cut to his wrist, lost a significant amount of blood, requiring a tourniquet to be applied on the scene and was taken to Bellevue, where he remains for treatment.”

The suspect’s “tirade” continued as he then ran up some stairs and got into an argument with a 26-year-old woman, Imani-Ciara Pizarro, before punching her in the back of the head and stabbing her in the throat near a turnstile, according to prosecutors.

“He first punched her in the face before then lunging at her with the knife, causing a small cut to her neck,” prosecutors said Wednesday.

Pizarro, 26, told The Post she was on the phone with her friend and neighbor when she was attacked.

“I wish I could be able to travel to my livelihood and not be attacked. I wish there were cops in Grand Central when I was attacked, there were none. I was running for help and there was no one there,” she said.

Sargeant has three prior arrests for criminal mischief, fare beating, and assaulting a police officer, according to sources.

His next court hearing is set for Dec. 30.