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In page Walter Matthau:

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On the late evening of June 30, 2000, Matthau had a heart attack at his home and was taken by ambulance to the St. John's Health Center in Santa Monica, where he died a few hours later at 1:42 a.m. on July 1, 2000, at age 79.[1] He is buried at Westwood Village Memorial Park Cemetery in Los Angeles. Matthau's wife Carol Marcus died in 2003, and her body is interred in the same plot as her husband.[citation needed]