ARCADIA, Calif. >> Authorities say four tree sitters who tried to stop bulldozers from clearing 11 acres of oaks and sycamores in Arcadia have been removed from the trees and arrested.

Los Angeles County sheriff’s Lt. Julio Salcido says two men, including veteran tree-sitter John Quigley, and two women were escorted out of the trees at about 8:30 p.m. Wednesday and taken into custody. He says they were being booked on suspicion of delaying a peace officer and trespassing.

The arrests culminated a daylong standoff between the activists and Los Angeles County public works crews who were trying to clear out the trees, some of them more than 100 years old, to ensure the integrity of a nearby dam.