(Portland, OR) -- Pro-Palestinian demonstrators blocked I-405 in Portland for two hours on Saturday. Drivers were able to get past the demonstration using one lane that was open. Portland Police didn't respond to the demonstration which frustrated many of the drivers. Police said the group did not have a permit for the demonstration and that they were monitoring the event. On Friday, police arrested four people for disorderly conduct during a demonstration. They say on Saturday it was an issue of resources.