The Chief Medical Examiner's Office in Connecticut has ruled the cause of death as "undetermined" for a homeless man found off Interstate 84 last month.  The ruling was made after the results of a toxicology screen came back.  DOT workers discovered the body of 63-year-old Herbert Ruehle by the Exit 4 ramp on May 2nd as they prepared for mowing.   State Police said at the time that there was no indication of foul play. The case remains under investigation.