Probation check uncovers arsenal, gun-making parts in Huntington Station home

A routine probation check at a Huntington Station home turned up four assault rifles, a shotgun, a revolver and gun-making parts, leading to the arrest of Matthew Hibner, 37, Suffolk County police said.

Probation officers went to 5 Roxanne Court on May 14 and observed weapons-related items inside the residence, police said. Second Precinct officers and detectives were called in to secure the scene, and the Suffolk County District Attorney’s Squad later assisted with the investigation, according to local reporting.

Investigators said they recovered four assault rifles, one revolver, one stun gun, one shotgun, high-capacity magazines, a drill press, upper and lower receivers and gun molds. The collection went beyond simple possession, pointing to a possible home-based operation to assemble or manufacture firearms components in a suburban neighborhood that sits squarely within Suffolk County’s regular probation supervision network.

Hibner was charged with multiple weapons offenses and controlled-substance counts, police said. He was on probation for a stolen-property or stolen-car-related case when the weapons were found, making the arrest a reminder that firearm enforcement in Suffolk often intersects with repeat-offender supervision and other criminal cases already under court oversight. He was held overnight and was scheduled for arraignment in First District Court in Central Islip.

The timing matters. Police said the arrest followed the May 14 probation check, and the department’s release was dated May 15. A local report described the visit as happening Thursday night, underscoring that the cache was discovered not by a street stop or an outside tip, but through routine monitoring meant to check whether a probationer is following court-ordered conditions.

Suffolk County has recently publicized other probation-search gun seizures as well, including a March 2026 case in Lindenhurst where officers said 22 firearms were found behind a false wall. Taken together, the cases show how probation searches can expose hidden arsenals before weapons move deeper into the county’s streets, and why supervisors, investigators and court officials remain focused on compliance checks as a public-safety tool.