JOHN GRZYMINSKI's life has gone from bad to worse.

Clad in a yellow prison jumpsuit, the 50-year-old appeared before a federal magistrate Friday, after being charged with knowingly possessing unauthorized destructive devices, just a few days after cops found three pipe bombs in his Warrington home.

The magistrate ordered him to remain behind bars until a hearing Tuesday to determine if should be eligible for bail.

According to a criminal complaint filed Thursday in the eastern district of Pennsylvania, Grzyminski allegedly argued with his mother, Catherine Wilson, and his brother, Michael Grzyminski, when Wilson returned home Wednesday from a hospital stay for surgery.

John Grzyminski had removed his mother's wheelchair access to their house, on Saddle Drive near Carriage Way, the complaint alleges.

He fled the property following the argument, but Wilson called 9-1-1 and told police she was afraid because he had numerous guns in the house.

Police told Wilson that he was allowed to have the legally owned firearms because he didn't have a criminal history.

Shortly after, Wilson told police, she found a pipe bomb, with a fuse attached, in the kitchen. Police swarmed the quiet neighborhood and allegedly found two more bombs in a bedroom.

John Grzyminski returned to the property and told police that the pipe bombs were actually fireworks for the Fourth of July, according to the complaint.

He was allowed to leave to the scene, but was arrested Thursday by cops in nearby Solebury Township and was charged with recklessly endangering another person, risking a catastrophe and related offenses.

An agent from the Bureau of Alcohol, Tobacco, Firearms and Explosives noted in the complaint that fireworks are usually housed in paper tubing. The explosive devices in Grzyminski's house were housed in PVC pipe, "which would shatter and send high-velocity shrapnel in every direction upon explosion," the agent noted.

The homemade bombs also contained a black-colored powder that appeared similar to Pyrodex, an explosive propellent, according to the complaint.

Investigators said they found various materials inside Grzyminski's house that are often used to construct pipe bombs, as well as a locked gun safe in the basement. n

Contact David Gambacorta at 215-854-5994, gambacd@phillynews.com or on Twitter @dgambacorta.