Evidence is mounting that nearly 70-foot floating dock that washed ashore on an Oregon beach came from an area of Japan devastated by last year's tsunami.
Oregon parks spokesman Chris Havel said Wednesday that a scientist from the Hatfield Marine Science Center found a starfish native to Japan among the marine life clinging to the dock.
And a metal plaque attached to the dock indicates in Japanese that the dock was intended for use in the port of Misawa, in Aomori Prefecture, a coastal area of Japan hit hard by the March 2011 tsunami. The plaque is dated June 2008.
Havel says a check found no radiation contaminating the dock.
The dock washed ashore Tuesday on Agate Beach, a mile north of Newport in central Oregon. It's made of concrete with a metal pontoon and measures 66 feet long, 19 feet wide and 7 feet high.
Associated Press writer Ryan Nakashima in Los Angeles contributed to this report.