SAN JOSE, Calif. (AP) — Authorities couldn’t find the driver of a pickup truck after it rolled over along a Northern California freeway. But he was there a week later when they went back to search for more clues.

Police discovered Michael Sanchez Jr. unconscious Tuesday in a dense thicket of brush and trees below an offramp along Highway 101 in south San Jose.

Questions remained, however, about why he wasn’t found during the initial search of the scene after the May 8 crash.

“We were looking all over for this gentleman,” CHP Lt. Les Bishop told the San Jose Mercury News. “We not only searched the immediate area and the brush, but we checked the shoulders on the freeway, the neighborhoods and the adjacent park.”

Bishop told KTVU-TV it was a diligent, thorough search.

“It wasn’t just 45 minutes of standing around,” he said.

Bishop said witnesses reported that a man had climbed out of the overturned truck and left the area before the CHP arrived. Bishop did not immediately return a call from The Associated Press seeking further comment.

Sanchez, 25, of San Jose was listed in critical condition at a hospital, and police have not yet been able to talk to him.

The discovery of Sanchez came about a week after members of the California Highway Patrol, the Santa Clara Sheriff ’s Department and firefighters using highpowered lighting conducted an initial search at the crash site for nearly an hour.

Family members reported Sanchez missing after he failed to show up for a funeral two days after the crash, police said. An acquaintance last heard from Sanchez on the day of the crash.

Three San Jose police detectives desperate for clues went back to the crash site Tuesday evening in hopes of finding a paper trail that might lead to him or show where he had been before the crash, Officer Jose Garcia told the AP.