Pinal County authorities discover explosives while investigating San Tan Valley assault

FLORENCE, AZ - Pinal County authorities say they found explosive devices and grenades in a San Tan Valley home while investigating an alleged assault.

The county Sheriff's Office received a call Saturday from a Washington state man who said his mother had been involved in an argument with her other son.

The man says 51-year-old Wesley Boles allegedly put a gun to his mother's head.

A criminal history check showed Boles was a prohibited possessor of a firearm because he has two prior felony convictions.

Detectives and SWAT team members served a search warrant on the residence. They reported finding 28 firearms, two 37 mm rocket-propelled grenades, five homemade explosive devices, a detonator and thousands of rounds of ammunition.

Boles has been booked into jail for assault and possessing firearms and ammunition.

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