7:55 p.m.: Protesters gathered outside the Justice Center in downtown for a couple of hours before marching around the building. Police officers told people to get out of the street and arrested at least two.

5 p.m.: Portland police say they've arrested five more people on the lower east side. That brings the total to 11 arrests for the day.

4:50 p.m.: People are walking down Martin Luther King Jr Boulevard as traffic slows. Police in riot gear arrive and demonstrators scatter.

Police say they have arrested a total of 6 people Wednesday afternoon.

4:35 p.m.: Protesters are now on the Steel Bridge, chanting "Whose streets? Our streets!" They marched along the upper deck, numbering about 20. They carried a banner that demanded the firing of Portland Police Chief Mike Marshman.

4:30 p.m.: Most of the remaining group get on a MAX train. Reporters on the scene hear the destination may be Burnside and Martin Luther King Jr. Boulevard on the east side.

4:25 p.m.: A group of about 30 people were hanging out in Pioneer Courthouse Square, talking among themselves.

3:56 p.m.: Micah Rhodes, a protest organizer, has been arrested and taken away. Police say they have now arrested five.

3:41 p.m.: Traffic is moving again at Fifth and Yamhill. Police say they arrested three of the protesters, the rest of whom remain in the square.

3:33 p.m.: Police move in to clear the intersection and begin making arrests. A crowd of onlookers watching the protesters starts cheering when they see police, who quickly leave the area after making the arrests.

Police arrest protesters blocking traffic in Portland on Jan. 25, 2017 50 Gallery: Police arrest protesters blocking traffic in Portland on Jan. 25, 2017

3:20 p.m.: About 30 people gathering at Pioneer Courthouse Square. Shortly after the group moved into the street to block traffic at Southwest Yamhill Street and Fifth Avenue. Buses and MAX trains are blocked, and frustrated motorists are honking and arguing with protesters. One protester is sitting on a bus windshield.

Update 10:45 a.m.: A Facebook page saying it represents the organizers of Wednesday's protest now says protesters will arrive about 3 p.m. The page show 95 people are "going" and hundreds others are interested since the early morning. A handful of people showed up to the Pioneer Courthouse Square in the morning.

***

Scattered protests could pop up Wednesday in Portland as activists say they plan on "shutting down" the city in objection to what they call unjust police force during Friday's demonstrations.

Details indicated a gathering could begin at Pioneer Square at 8 a.m. before moving to City Hall by 9 a.m. A group of up to 200 protesters met early this week and have indicated they plan to participate, The Oregonian/OregonLive reported.

But as of 8:15 a.m., Pioneer square was quiet and empty.

With @SMatsumoto55 at Pioneer Square where one protest group said they'd gather bet. 8 and 9am, but just media here so far #portlandprotest pic.twitter.com/B3OTgHA3c3 — Dave Killen (@killendave) January 25, 2017

Heard about group blocking traffic at college and Broadway, but found nothing out of the ordinary by the time we arrived pic.twitter.com/99a0dDuIZK — Dave Killen (@killendave) January 25, 2017

Activists have demanded Mayor Ted Wheeler fire Portland Police Chief Mike Marshman after officers shot tear gas, flash-bang and sting-ball grenades at protesters at marchers and protesters on Friday. Marshman has told the media he is keeping his job.

Portland Police Bureau spokesman Pete Simpson said in an email Tuesday, "The Bureau is aware of potential protest events on Wednesday and is preparing accordingly for a variety of scenarios.

"As always, the Bureau supports free speech events and would remind organizers that marches or demonstrations occurring in public streets that restrict movement of other community members do require a permit issued by the City of Portland to allow for the safety of all."

This post will be updated as news develops.

-- Tony Hernandez

thernandez@oregonian.com

503-294-5928

@tonyhreports

-- Samantha Matsumoto, Dave Killen and Everton Bailey Jr. contributed to this report.