Police arrested over 100 people early Friday morning (around 1:00 - 2:00 am). The protesters were separated into smaller groups and sent to different areas of Portland. Police told arestees that anyone who did not give their name would be kept in jail until Monday at the earliest. Several people who had planned to practice jail solidarity gave their names.
The last group of name-giving protesters at the downtown jail was released around 2:00 pm on Friday. By 5:00 that same day, all of the anonymous protesters in the jail were gathered up and released as well, without ever having given their identities.
Yet another example where the police lied to prisoners and jail solidarity proved its utility. Please spread the word that anonymous protesters were released, despite repeated threats that they would be kept through the weekend. I don't know for sure whether people at other locations have been released as well.