[abb]

Not so. Only if the person has committed, or is about to commit a crime.

http://www.lpdirect.net/casb/crs/16-3-103.html

(1) A peace officer may stop any person who he reasonably suspects is committing, has committed, or is about to commit a crime and may require him to give his name and address, identification if available, and an explanation of his actions. A peace officer shall not require any person who is stopped pursuant to this section to produce or divulge such person’s social security number. The stopping shall not constitute an arrest.

[lepton]

Not so. Only if the person has committed, or is about to commit a crime.

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The standard for that is probable cause. In this case the police botched the association with a crime - which is a problem for them - but if they believed it to be a crime, then they have probable cause to meet the criteria for the section you posted.