FITCHBURG — Family and friends of an expelled Fitchburg State University student arrested on Tuesday for allegedly possessing a semiautomatic rifle ammunition belt say the belt is fake and nothing more than a fashion statement.

They also say that Andrew K. Despres is being discriminated against for his punk appearance and that the ammunition possession charge and the $50,000 cash bail set at Fitchburg District Court on Wednesday are the result of heightened emotions in response to the recent school shooting in Newtown, Conn.

Andrew Despres, 20, of New Bedford, was arrested on Tuesday for trespassing and possessing ammunition without an FID card as he attempted to remove his belongings from his FSU dorm room following his expulsion from the school on Monday for alleged infractions including possessing marijuana and other items prohibited on campus, including firecrackers and a box cutter. A buck knife found in his room was found to belong to his roommate, John Lafirira, 19, of Loudon, N.H., who said Friday the charge was dropped against him and the knife has been returned.

Doreen Despres says her son bought the fake ammunition belt at a website called crustpunks.com about two years ago, and that he’s worn it nearly every day since, including on campus at FSU and to all of his classes.

“I’m disgusted with the whole situation because everybody knows that it’s fake,” she said in a telephone interview on Friday. “Everybody who could see or touch it knows it’s fake. Anybody can buy one at Hot Topic. Andrew doesn’t own a gun and he never has.”

Andrew Despres was expelled from the university on his 20th birthday and will now spend Christmas in a jail cell, Doreen Despres said. She said the entire family is in shock, because he’s “just a regular kid” who has no prior record and has never been in any trouble in his entire life.

“He doesn’t conform to what anyone else is wearing, but he doesn’t do anything bad,” Doreen Despres said. “It isn’t a crime to look different.”

She hopes a bail hearing scheduled for 9 a.m. on Wednesday at Worcester Superior Court will be able to straighten everything out, that the ammunition charge will be dropped and her son will be released on personal recognizance.

An outpouring of support for Despres has appeared on Facebook and in other arenas, with more than 300 friends and fellow FSU students pledging their attendance at a Wednesday event called “Free Day Day,” which is Despres’ nickname.

“If he was so terrorizing, why would all these hundreds of kids support him?” Doreen Despres said.

She made a Facebook page for the first time on Friday to be able to see all of the support for her son, which she called “the one bright spot” she’s had over a rough few days.

Lafirira said the box cutter and Xacto blades found in his roommate’s belongings are art tools he uses to make stencils, and the belt is just part of his attire.

“He has worn it on campus for a year and a half now, with no problem with it until this arrest,” Lafirira said. “I believe this charge is tacked on to hold him as long as they can, and make him out to be a monster or a school shooter.”

Alyssa Almeida, a friend of Andrew Despres for five years, said the accusations regarding his mental state are “out of line.”

“To say he’s mentally unstable for having a bad attitude towards a school that kicked him out over two miniscule things on his birthday? Can you blame him?” she said. “He’s being discriminated against, it’s very clear.”

In an email sent out to students, FSU President Robert V. Antonucci maintains that the university’s safety protocols and vigilance were effective, and said that Andrew Despres was not carrying a gun nor was he a risk to other students during the incident leading to his arrest.

“Insuring the safety of our campus community is a responsibility I approach with the utmost level of seriousness,” Antonucci wrote. “Indeed, that is why the student was swiftly expelled and barred from campus — and why he currently resides at the Worcester County Jail.”

Michael Vanderpool, 20, of Hopkinton, the creator of the “Free Day Day” event, wrote on the page that Andrew Despres is no stranger to being stereotyped by others who take one look at his dyed hair and patch-covered clothing and think he’s trouble.”

“Andrew never cared about being accepted, and therefore he was alien,” Vanderpool wrote. “People see the alien in him and they respond in one of two ways, they think he’s a fake, or they think he’s a criminal.”

Vanderpool said the reaction of campus officials and the court were made out of “misplaced fear” for the potential of a similar occurrence to the Newtown shooting to happen here.

“These shootings are tragic and horrific events and recently they have been brought way too close to home,” Vanderpool wrote. “However, a boy is in prison for wearing a belt with inactive ammunition and trespassing on state property only to move his belongings back home. He is still waiting for his chance to go home, that’s all he wants. He doesn’t want to hurt anyone. Right now he is alone and scared in a prison wondering why his life fell apart.”