How did Charles Proteus Steinmetz died?

Charles Proteus Steinmetz died on October 26, 1923, from complications related to a heart condition. He had been in declining health for some time before his death. Steinmetz, a prominent electrical engineer and mathematician, is best remembered for his contributions to the development of alternating current (AC) systems and his work at General Electric. His passing marked the end of a significant era in electrical engineering.