397. Robbery when armed or with attempt to cause death or grievous hurt

If at the time of committing or attempting to commit robbery, the offender is armed with or uses any deadly weapon, or causes grievous hurt to any person, or attempts to cause death or grievous hurt to any person, such offender, and any other person jointly concerned in committing or attempting to commit such robbery, shall be punished with caning with not less than 12 strokes, in addition to any other punishment to which he may be liable under any other section of this Code.