Kevin Krebs, 32, of Malvern, Pennsylvania, was sentenced on July 14 to 37 months in prison and three years of supervised release for possessing unregistered explosive devices, according to an announcement by United States Attorney David Metcalf.
Krebs was arrested on a criminal complaint and warrant in October of last year. He was charged by information in December with one count of possession of an unregistered firearm or destructive device and pleaded guilty the same month. United States District Judge Mary Kay Costello handed down the sentence.
According to court filings and statements, Krebs was initially arrested by the West Chester Police Department on June 14, 2025, for carrying a firearm without a license. Two days later, Chester County Detectives executed a state search warrant at his residence and discovered what appeared to be an improvised explosive device (IED), specifically a pipe bomb with related materials in his garage.
Bomb technicians examined the device and determined it contained nails and screws commonly used as shrapnel in IEDs. Investigators found multiple additional IEDs, other explosive materials, and related components during their search. In total, authorities recovered six destructive devices and ten improvised explosive detonators, as well as eight one-pound orange plastic containers containing suspected ammonium nitrate and aluminum powder—a binary mixture classified as a regulated explosive when combined.
The investigation involved the Chester County District Attorney’s Office; FBI Philadelphia’s Newtown Square Resident Agency; West Chester Police Department; Montgomery County; FBI; Bureau of Alcohol, Tobacco, Firearms and Explosives bomb squads; with prosecution led by Assistant United States Attorneys Everett Witherell and Frank Menna.
The commonwealth’s case against Krebs is still pending.