Davis County Sheriff's Office
Jose Benito Guanajuato

FARMINGTON — Police early this week arrested a man who they say had chemicals to make explosives and what appeared to be scrawled notes about his "target," an apartment building in Salt Lake City.

Jose Benito Guanajuato, 34, of North Salt Lake, was arrested Sunday for investigation of possession of a dangerous weapon by a restricted person and possession of a controlled substance, according to an affidavit filed in 2nd District Court in support of his arrest.

On Sunday, Guanajuato's aunt called police and reported a smell of ammonia coming from her home. When the aunt showed police the spare bedroom, an officer noticed "several items and chemicals that would be consistent with a possible drug lab," according to police.

Another family member arrived at the house and told police she had seen Guanajuato walking on Redwood Road. Police found and arrested him.

When they searched the home later, officers found in the room "two pieces of notepad paper that had several numbers and notations on them. Some of these notations said VX, sarin, nerve agents, blister agents, mustard and lewisite," among other chemicals and measurements, police wrote.

Lewisite is a chemical weapon used as a lung irritant, police said.

Police also found receipts in the room that showed purchases of some of the listed chemicals, according to the affidavit. In Guantajuato's room they found more receipts, as well as meth and cocaine, the affidavit states.

"In Jose’s bedroom there was a black bag that contained a laptop, tablet, cellphones and some notebooks. In one of the notebooks there were some notes that had the word 'Target' and underneath that word American Towers and some lat long coordinates," police wrote.

American Towers is a housing building at 44 Broadway in Salt Lake City.

"There was a notation about American Towers that said, 'American towers is not only the foundation of homeland security but is also coustums, ice (sic) my last visit at this building it was around 400 am and I noticed the car lots were empty theer (sic) were about 6 cars or less, to my understanding this is also a condows (sic),'" according to the affidavit.

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The Davis County Health Department conducted tests on the chemicals and police said "it appeared that there was everything present to make what is called TATP which is an explosive substance. It appeared that the parts just had not been mixed."

When interviewed, Guantajuato wouldn't tell police what he was doing with the chemicals, the affidavit states.

Believing he may pose a danger to the public, police asked that he be held without bail.

Guantajuato has a criminal history in Utah, according to court documents, including mostly drug charges.