Reputed Ku Klux Klansman Edgar Ray Killen has been transported from Jackson to Laird Hospital in Union.
Meanwhile, a decision could be made by the end of this week whether or not to change his trial date.
Attorneys in the case are set to meet again with the judge on Friday to discuss the matter.
However, prior to that, they will meet with Killen's doctors sometimes this week to discuss his condition.
Killen recently broke both of his legs during a logging accident.
He was set to go to trial on April 18 for the 1964 murders of three civil rights workers in Neshoba County.