The global synthetic drugs crisis has hit West Africa, where people are digging up human bones to make a drug called 'kush'

JOHN WESSELS | Getty Images

• Sierra Leone declared a state of emergency over widespread drug abuse.
• One drug causing particular concern in the West African nation is the synthetic drug "kush."
• Locals say the drug is made with ground human bones.

Sierra Leone's capital, Freetown, is a bustling African port city on the Atlantic Ocean, where even the dead can't rest, say its residents.