Association of Schools and Programs of Public Health CEO Harrison Spencer, seen here in a 2015 speech at McGill University, was stabbed to death in his Georgetown home Wednesday.

Harrison Spencer, CEO of the Association of Schools and Programs of Public Health, was stabbed to death in his home Wednesday, according to media reports. His 32-year-old son was arrested and charged with first-degree murder while armed.

Spencer, 71, became the first full-time CEO of the Washington, D.C.-based ASPPH in 2000. The organization, which reported 40 staff and $15 million in revenue on its most recent tax records, had not issued any statements about its CEO's death as of Friday morning.

Spencer was a medical doctor who was an expert on tropical medicine. Before joining ASPPH, he was dean of the London School of Hygiene & Tropical Medicine for four years. He previously was dean of the Tulane School of Public Health and Tropical Medicine in New Orleans. The CEO spent much of early career working at the Centers for Disease Control and Prevention, having founded and directed the CDC research station in Nairobi, Kenya.

Police responded to Spencer's Georgetown home Wednesday evening after his son, Peter Spencer, allegedly called 911 and told the operator he had killed his father. The younger Spencer reportedly said he had heard voices telling him to murder his father.

Peter Spencer is undergoing a psychiatric evaluation, according to news reports. He is due in court Aug. 29. http://bit.ly/2aYBxYY

MORE CEO DATELINE

• Association: Half of women in advertising have been sexually harassed
• API launches ad campaign attacking ethanol mandate
• Trump gets personal in speech to National Association of Home Builders
• Judge tosses U.S. Chamber lawsuit to stop ridesharing unionization
• Report: Registered lobbyist numbers continue to drop