Pinal County Sheriff’s deputies have arrested a 51-year-old man after he allegedly put a gun to his mother’s head in the San Tan Valley home they shared. Sheriff Paul Babeu said Wesley Boles was found to have an arsenal in the home.

“28 firearms, two 37 millimeter rocket-propelled grenades and five homemade explosive devices, including a detonator and thousands of rounds of ammunition,” Babeu said.

He said Boles was not allowed to have firearms because of an earlier conviction. He said it is unclear what he intended to do with the arsenal deputies found in the home.