According to the family, DeGeurin had been sick for a while and received intensive care at Methodist Hospital at the Texas Medical Center.
In one of his most high-profile cases, DeGeurin served as the defense attorney for a woman who was charged with a deadly daycare fire in 2012.
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Mike was the younger brother of Dick DeGuerin and worked alongside him.
"Mike and I and his son, my nephew Michael, finally had the opportunity to try a case together and it's one of the highlights of my career that the three of us were on the same team on a murder trial," Dick said.