A two-vehicle accident in Grass Valley Wednesday morning did not cause any serious injuries, but did block traffic, said Grass Valley Police Capt. Rex Marks. The accident, which occurred at 8:17 a.m. at East Main Street and Idaho-Maryland Road, involved a Toyota Sequoia SUV and a pickup truck, Marks said. Initial, medical was requested, but both drivers declined medical attention. The two vehicles were towed from the scene.