The warrant for John Grzyminski, 50, is on charges of possessing or manufacturing weapons of mass destruction, risking a catastrophe, possession of instruments of crime and recklessly endangering another person.
Grzyminski was last seen operating a 2003 Dodge Ram extended-cab pickup truck with PA registration YLX-3962. The truck also has a chrome Dale Earnhardt #8 license plate and a tool box in the cab.
Grzyminski is an avid outdoorsman, police said, and he owns numerous firearms. Police say he may be in possession of a .357 caliber handgun that is usually kept in the truck.
Police urge extreme caution if you spot Grzyminski, saying you should call 911 and do not approach him or his vehicle.
Anyone with information can also call Warrington Police Sgt. Daniel Friel at 215-343-3311 x207 or email dfriel@warringtonpd.org.
It was around 4:00 p.m. Wednesday that Grzyminski's mother arrived from vacation to her home in the 1800 block of Saddle Drive to discover what appeared to be a pipe bomb in her kitchen. Her son was not around at the time and she called police.
The ATF and the Philadelphia Bomb Squad were called and found two other similar devices in another part of the house.
"We're going to classify them right now, preliminarily, as suspected explosive devices, essentially pipe bombs," Special Agent in Charge at ATF Sam Rabadi said on Wednesday.
At least a dozen homes were evacuated as a precaution including neighbor Lynn Donahue whose husband is in a wheelchair.
"It's scary, he had a stroke nine years ago, so it's a fear factor when you hear anything like because he has trouble getting down the steps," Donahue said.
Chopper 6 HD was over the scene when authorities, wanting to take no chances with the ominous looking devices, safely detonated each of them with a remote detonating unit.
ATF agents collected the contents of the devices.
"They're going to be sent down to our ATF lab down in Washington for further forensics testing as well as classification," Rabadi said.
Authorities removed other potential bomb making components as well as three hunting rifles and other weaponry.
Authorities say they do not believe the incident is related to any type of terrorism.
"I do believe it's an isolated incident," Rabadi said.
Nevertheless, neighbors are disturbed about the whole thing.
"Not happy about it, you want to live in a safe neighborhood," neighbor Cristina Petresce said.
"It's scary because I live 100 yards from the house, so that's kind of nerve-racking," neighbor David McClain said.
