Two Brothers Charged with Firearm Offenses After Federal Agents Seize Cache of 40+ Firearms, Including Uzi Submachine Gun, Fully-Automatic Pistol, Short-Barreled Rifles, and Silenced AR-15 Style Pistol From Kalihi Residence

News Release from U.S. Attorney's Office, District of Hawaii, Tuesday, March 24, 2026

HONOLULU – United States Attorney Ken Sorenson announced that brothers Skyler Supapo, 24, and Sebastian Supapo, 20, of Kalihi, Hawaii, were arrested and charged last Friday for illegally possessing firearms.

According to the criminal complaint, following an investigation into online social media accounts and suspicious parcel shipments, federal agents obtained a search warrant for a residence in Kalihi.  During the execution of that search warrant, federal agents recovered a total of 44 firearms.

Among the 44 firearms, were an Uzi Submachine gun, a pistol with an installed machinegun conversion device, at least two firearms with obliterated serial numbers, two short-barreled rifles, an AR-style pistol with an installed suppressor/silencer, and one firearm suppressor/silencer.  Photographs of some of the firearms are included below:

The Supapo brothers are charged with possession of a machinegun; possession of a firearm with an obliterated serial number; and possession of an unregistered National Firearms Act firearm.  If convicted of the charged offenses, the defendants face up to 5 years in prison for possessing a firearm with an obliterated serial number and up to 10 years in prison for the other two charges, as well as a fine of up to $250,000.

The charges in the criminal complaint are merely accusations, and the defendants are presumed innocent unless and until proven guilty beyond a reasonable doubt in a court of law.  In the case of conviction, any sentence would be imposed by a United States District Judge based on the statutory sentencing factors and the advisory United States Sentencing Guidelines.

The FBI and the United States Postal Service Office of the Inspector General are investigating the case, with assistance from the Bureau of Alcohol, Tobacco, Firearms and Explosives, U.S. Postal Inspection Service, and the Honolulu Police Department.

Assistant U.S. Attorneys Barbara Eucker and Michael Albanese are prosecuting the case.

This case is part of Operation Take Back America a nationwide initiative that marshals the full resources of the Department of Justice to repel the invasion of illegal immigration, achieve the total elimination of cartels and transnational criminal organizations (TCOs), and protect our communities from the perpetrators of violent crime.