506. Whoever commits the offence of criminal intimidation shall be punished with imprisonment for a term which may extend to two years or with fine or with both; if the threat is to cause death or grievous hurt, or to cause the destruction of any property by fire, or to cause an offence punishable with death or imprisonment, or with imprisonment for a term which may extend to seven years, or to impute unchastity to a woman, shall be punished with imprisonment for a term which may extend to seven years or with fine or with both.