MEDFORD, Ore. (AP) — A former UPS driver charged in shootings that injured a woman and damaged vehicles along Interstate 5 in Southern Oregon has been sentenced to 20 years in prison.

Kenneth Ayers, 49, of Roseburg, was sentenced Tuesday in Jackson County Circuit Court for three counts of attempted murder, five counts of unlawful use of a weapon, three counts of reckless endangerment, and four counts of criminal mischief, The Mail Tribune reported.

Ayers pleaded guilty to the charges last week. From May to August 2020, multiple drivers reported to Oregon State Police that their vehicles had sustained damage from bullets, including flattened tires, loss of power steering and a pierced coolant hose in a semi. There was no apparent pattern to the shootings.

They happened in Jackson, Josephine and Douglas counties during the day and night and happened to vehicles traveling north and south.

On Aug. 19, a woman was shot in the shoulder while driving on I-5 between Gold Hill and Central Point and police arrested Ayers about 60 miles away. He was employed by UPS as a driver at the time.

Ayers declined to speak at sentencing.