A man who thought his neighbor was spying on him was arrested for head-butting him and damaging his hand-held ham radio and personal drone.

Police say Steven Anthony Garza, 34, of Austin, Texas, aggressively walked into his neighbor's yard and head-butted him without saying a word, KYUE - TV reported.

After the victim went inside his home, Garza then threw his radio and personal drone over the fence, causing $4,000 worth of damage.

The police were called and Garza told them his neighbor had been using the equipment to spy on him and was attempting to "triangulate" his position and get into his head.

Garza faces assault and criminal mischief charges.