A Dallas teacher previously accused of tampering with evidence tied to a July 4 attack outside the Prairieland Detention Center in Alvarado has been rearrested, this time with an additional terrorism-related charge.
Court and jail records indicate that his bond conditions, including internet monitoring, were a key factor in his return to custody.
The suspect, 32-year-old Dario Sanchez, was first arrested on July 15 after allegedly deleting messages on Signal and Discord that investigators say were linked to group chats planning an “operation” at the detention center.
His initial bond was set at $5 million but was later reduced to $150,000. Sanchez was indicted on August 28, released on bond the following day, and publicly claimed he was “wrongfully arrested.”
On Monday, he was rearrested for the same tampering charge, this time with a $1 million bond and an additional allegation of hindering the prosecution of terrorism.
Court documents show the escalation was tied to his internet search history, which was monitored under his bond conditions.
The filings state that Sanchez conducted searches “best characterized as explosive construction internet queries.”
Examples include how to melt plastic to make molds, how to modify radio-controlled transmitters, and whether Nintendo Game Boy batteries could serve as power sources for triggering devices.
One search specifically asked whether a 900 mAh Game Boy battery could be used in a trigger system. Another focused on whether “aluminite” could be used in explosives.
When questioned about the searches by his bond officer, Sanchez claimed he was experimenting with hobbies, including building anime figure molds, tinkering with plastic model cars, and replacing a battery in his old Game Boy.
His attorney, Frank Sellers, argued that prosecutors were criminalizing normal behavior. “He’s stuck at home trying to find a hobby, something to tinker with,” Sellers told KERA News.
“And instead of allowing a person to live their lives, Johnson County has thrown him in jail for what George Orwell would call ‘thought crime.’”
Court records show that Sanchez was required to install GPS monitoring and remote surveillance software on his devices within seven days of release.
The software was set to monitor for searches related to gun violence, anti-government activity, and general threats of violence. Sellers described the restrictions as excessive, calling them “the most oppressive bond conditions I’ve ever seen in almost 13 years of doing this.” He said he would appeal if Sanchez’s bond is not reinstated.
The July 4 incident at the detention facility remains under investigation.
Authorities allege that as many as a dozen individuals dressed in black launched fireworks at the facility before one person opened fire from the woods, striking an Alvarado police officer in the neck.
Seventeen suspects have been arrested, with fourteen facing federal charges. Hearings for those individuals were held earlier this week, with some transferred from Johnson County Jail to Wichita County Jail.Sanchez’s next court appearance is scheduled for October 16, where his legal team plans to contest the new charges and conditions of his detention.
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