He was released from probation early previous year after he was convicted in 2015 of storing explosives and was charged in a criminal complaint filed in federal court, according to the Houston Chronicle.
According to an Federal Bureau of Investigation affidavit, Schneck was spotted just after 11 p.m. Saturday kneeling in front of the General Dowling Monument, a marble statue honoring Richard Dowling, who served as a military leader and then a recruiter for the Confederacy. Schneck attempted to drink the liquid explosives but spit it out, according to a statement from the U.S. Department of Justice, Southern District of Texas. Several years earlier, the suspect "pleaded guilty to.[a] misdemeanor federal charge" after being caught "improperly storing explosive material".
Schneck's lawyers did not offer many details about the case when reached by the Chronicle on Monday afternoon. HMTD, which is considered a "highly explosive compound", is used as a primary explosive.
This is not the first time Schneck has faced charges related to explosives. After noticing a timer in one of Schneck's boxes, the ranger called police.
Federal authorities said one of two tubes on the devices contained nitgroglycerin and hexamethylene triperoxide diamine.
Assistant Houston police chief, Larry Satterwhite, announced that they recovered "significant hazardous materials" in the home but would not disclose what they were.
Philip Hilder, Schneck's attorney, declined to comment Monday.
"Over the term of his supervised release, Schneck has matured and his focus is no longer concentrated on high-risk activities", Hilder wrote. On November 8, 2016, the judge signed the order granting the motion for early termination of his term of supervised release.
According to court documents, Schneck has a bachelor's degree in chemistry from Austin College in Sherman, Texas.
Schneck made his initial appearance in court Monday morning. A detention hearing is scheduled for Thursday, August 24. After summarizing his criminal history, the KPRC article noted that "if convicted for Saturday's incident, Schneck faces a minimum of five to 40 years in federal prison and a possible $250,000 fine".