Did President Garfield die in office?

He was shot by Charles J. Guiteau on 2 July 1881 and died on 19 September 1881.

The 20th President of the United States James A. Garfield was assassinated. President Garfield was shot on July 2, 1881, and died 2 months later on September 19, 1881. His Vice President, Chester A. Arthur, became President