MONTGOMERY COUNTY, MD — A Germantown teenager accused of bringing a loaded handgun to Clarksburg High School one day after the mass shooting in Parkland, Fl. is expected to plead guilty, according to court documents filed Thursday morning in the Montgomery County Circuit Court.

Alwin Chen, 18, was arrested Feb. 5 for having a loaded, 9mm handgun and a knife on him at the school, police said. Chen was charged with possession of a handgun, possession of a firearm by a person under 21 years old and possession of a firearm on school property.

The Washington Post reports Chen intends to plead guilty to one count of carrying a handgun on public school property. The agreement is not final until it is approved by a judge. A hearing on the matter is scheduled for April 24. Court documents filed in the case said Chen, an honor roll student, regularly carried a homemade Glock semiautomatic handgun in his backpack or in a holster in his shirt to protect himself and others, The Post reports. He admitted to police that he brought the gun to school and "described it as a regular occurrence," prosecutors said.

Chen said he built the gun from parts he ordered online and tools he bought at Home Depot. He also had access to guns his father kept in their home. Montgomery County Police said they recovered two rifles, a shotgun, two handguns, ammunition, inert (replica) grenades, a ballistic vest and a replica electrical firing device (referred to as a clacker) at the home.

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A student told police that Chen was "always talking about bringing guns to school and saying how he would kill anyone," The Post reports. The same student told the Clarksburg High School's School Resource Officer (SRO) that Chen brought a gun to school the day he was arrested, just one day after 17 people were gunned down at a Parkland, Florida high school.

