The body of Aaron Traywick, CEO and founder of Ascendance Biomedical, was discovered in a spa room on Massachusetts Ave. shortly after 11:30 a.m. Sunday, the Metropolitan Police Department told SFGATE. The investigation remains ongoing. No evidence suggests foul play.

Ascendance employees Andreas Stuermer and Tristan Roberts told Vice News that Traywick was found in a flotation therapy tank. The soundproof tanks are typically filled with body-temperature saltwater to promote "sensory deprivation," which proponents say aids in the exploration of alternate states of consciousness. (Read more about the tanks here.)

"Aaron was a passionate visionary. He seemingly never tired as he brought people together to work on some of the most imposing challenges facing humanity," Roberts said in a statement to Vice. "While many in the biohacking scene disagreed with his methods, none of them doubted his intentions. He sought nothing short of a revolution in biomedicine; the democratization of science and the opening of the flood gates for global healing."