Overview

• Hyogo Prefectural Police re-arrested Dr. Tatsu Seno on July 17, 2025, on suspicion of burglary and theft from a pharmacy in the same building as his clinic.
• Authorities allege he used a master key between September 6 and 26, 2024, to steal 20 pills of 7 mg Libelsus (semaglutide).
• Seno admitted he took the GLP-1 diabetes drug for personal weight loss and to distribute to acquaintances.
• In November 2024 the pharmacy owner reported hundreds of thousands of yen worth of GLP-1 medications, including Mounjaro and Sujanu, had gone missing.
• Investigators are probing the full scope of his clinic access and motives as medical authorities warn against non-diabetic use of diabetes treatments.