During an autopsy, investigators found 246 bags of cocaine that were 2.5 cm long and 1 cm wide in the man's stomach and intestines, the statement said. The cause of death was ruled to be swelling of the brain caused by drug overdose.
The man had come from Bogota, Colombia, before boarding his connecting flight in Mexico City, authorities said.
After the man’s body was removed, the flight continued to Tokyo.
Swallowing packets of drugs is a common method used by smugglers to move drugs from country to country, CNN reported.