SAN FRANCISCO (AP) — Authorities using boats and drones are searching a river for a veteran automotive journalist who went missing in Northern California while test-driving a motorcycle for a story.

Calaveras County Lt. Anthony Eberhardt said Monday crews are searching the Mokelumne River and a reservoir for David Gordon Johnson, who was reported missing June 5. Eberhardt said no foul play is suspected.

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Johnson, who went by the byline Davey G. Johnson, was heading to his home in Sacramento when his girlfriend, Jaclyn Trop, and a friend last heard.

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Trop says Johnson was testing the motorcycle to write an article for Motorcyclist magazine.

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Search crews found the motorcycle Friday at a rest stop. On Saturday, they found his clothes, cellphone and a laptop a few feet away from the fast-moving river.