A meets X on the road and asks him to part with his belongings on the instant threat of hurt to X. While X delivers his purse to A, A snatches away a gold chain from X’s neck. A has committed

Extortion is robbery if the offender, in the presence of the person put in fear, commits the extortion by putting that person in fear of instant death, hurt or wrongful restraint and induces him to deliver up the thing extorted. Theft is robbery if in order to the committing of the theft, the offender for that end voluntarily causes death, hurt or wrongful restraint. When A asked X to part with belongings, he has committed robbery by extortion. When A snatches away a gold chain, he has committed robbery by theft.