Six people have been arrested in a demonstration at the Oregon state Capitol.

Two of the demonstrators climbed flag poles Monday and attached homemade banners protesting plans to increase logging on state land.

The others were arrested more than three hours after they chained themselves together Monday in the offices of Secretary of State Kate Brown and State Treasurer Ted Wheeler.

Several dozen other demonstrators remained in the building throughout the day, singing songs that echoed through the building.

Wheeler, Brown and Gov. John Kitzhaber make up the State Land Board, which angered environmentalists last year with a plan to increase logging in the Elliott State Forest.

The timber industry has said the plan will create new jobs and boost school funding, but conservation groups say it would harm fish and wildlife.