Don Ryan, Associated Press
Protesters affiliated with the Occupy Wall Street movement march across the Burnside Bridge as part of several activities planned today in Portland, Ore., Saturday, Oct. 29, 2011. Having started in New York, Occupy Wall Streets demonstrations now take place all across the United States, as protesters speak out against corporate greed and the gap between the rich and the poor.

PORTLAND, Ore. — Police say they arrested four people Saturday related to the Occupy Portland protest, but the cases didn't appear directly linked to demonstrations.

Spokesman Lt. Robert King says in a release that a 40-year-old man was arrested on a restraining order violation in the area of Chapman Square.

Another 40-year-old man was detained after police saw him urinating near the square.

Meanwhile, a 28-year-old man who had been staying at the Occupy Portland encampment was arrested on an escape warrant out of Olympia.

Police say a 60-year-old man was arrested on an outstanding warrant, but no other details were provided.