University of Oregon alumnus Noah DeWitt walked out of a friend’s house barefoot on Feb. 14. He hasn’t been seen for nearly a week.

Here’s everything we know so far about DeWitt, a journalism and international studies student who graduated in 2012:

DeWitt gave no reason for his disappearance. He had been uncharacteristically anxious the entire day after supposedly seeing the Dorena bus crash the day before.

There have been a lot of reports of sightings, but the search party is often skeptical. KVAL reported on Friday that DeWitt had been sighted south of Roseburg.

However, DeWitt’s friends think that was a sighting originally reported on Tuesday because they drove down to that area, talked to the police and put up posters from Winston all the way to Coos Bay.

That’s one of many reports received by Tyler Pell, Jessica Feather and other friends of DeWitt who have joined the search.

“We don’t know if that was Noah,” Pell said, “but we’ve canvassed that area pretty well at this point.”

Police think he could be anywhere up and down the I-5. On Monday, a “credible source” apparently saw DeWitt hitchhiking south of Roseburg, according to EPD’s public information office. This wasn’t reported by police until Friday.

“We’re reaching out as much as we can with everything we can,” McLaughlin said.