Hollywood veteran Ed Asner was hospitalized on Tuesday night, after having to cut short his sold-out performance in Gary, Indiana.

Asner, 83, best known for his role as Lou Grant on the “Mary Tyler Moore Show” had to be rushed off-stage in the middle of his portratayal of Franklin Delano Roosevelt in the one man show FDR. It is as yet unclear what the cause of the problem was. According to an audience member, he appeared confused and was not speaking clearly. The problem had started right before the show, apparently, since earlier in the evening, Asner had appeared in good health, when he conducted an acting class elsewhere in Gary.

Medical personnel arrived on the scene quickly and the performance was cut short. Asner also has other performances scheduled across the country, but it is presently unclear whether they will be cancelled or not. Currently, the actor is still recovering in a hospital in the Chicago area, but no other announcements have been made about his condition. A rep for Asner later released the statement that he had been suffering from exhaustion and was now resting comfortably.

This news comes just a week after another “Mary Tyler Moore” veteran, Valerie Harper, made the shocking announcement that she had been diagnosed with terminal brain cancer, with possibly just months left to live.

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Ed Asner and Paul Rudd attend the first performance of "Grace" on Broadway