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

• 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.

Cemeteries are bolstering their security measures because gravediggers are stealing human bones to make powerful synthetic drugs, local journalists told Business Insider.