Okla. Stat. tit. 21, § 21-794: What fear is an element

The fear which constitutes robbery may be either:

1. The fear of an unlawful injury, immediate or future, to the

person or property of the person robbed or of any relative of his,

or member of his family; or,

2. The fear of an immediate and unlawful injury to the person

or property of anyone in the company of the person robbed, at the

time of the robbery.