Scotland Stivers of Sault Ste. Marie was given a 30-day jail term and fined in Cheboygan County Circuit Court.
He pleaded no contest last year after illegally mooring three old tugboats on Duncan Bay. One later sank and two ran aground during storms, causing oil to wash onto the beach at Cheboygan State Park.
Sheriff Dale Clarmont said after Wednesday’s sentencing, Stivers tried to swallow cyanide from a vial he’d brought into the courtroom. Deputies grabbed the container.
Clarmont said Stivers, 51, later told him he was attempting suicide.
Clarmont said Friday that Stivers apparently ingested little if any of the cyanide, but was under hospital observation.