Look up Florida's "Stop and frisk law." Once someone has been briefly detained and questioned, the police have two options, let the person go or arrest them due to probable cause. Once someone has been moved from the scene, it's no longer considered a brief detention.
(1) This section may be known and cited as the "Florida Stop and Frisk Law."
(2) Whenever any law enforcement officer of this state encounters any person under circumstances which reasonably indicate that such person has committed, is committing, or is about to commit a violation of the criminal laws of this state or the criminal ordinances of any municipality or county, the officer may temporarily detain such person for the purpose of ascertaining the identity of the person temporarily detained and the circumstances surrounding the person's presence abroad which led the officer to believe that the person had committed, was committing, or was about to commit a criminal offense.
(3) No person shall be temporarily detained under the provisions of subsection (2) longer than is reasonably necessary to effect the purposes of that subsection. Such temporary detention shall not extend beyond the place where it was first effected or the immediate vicinity thereof.
(4) If at any time after the onset of the temporary detention authorized by subsection (2), probable cause for arrest of person shall appear, the person shall be arrested. If, after an inquiry into the circumstances which prompted the temporary detention, no probable cause for the arrest of the person shall appear, the person shall be released.
(5) Whenever any law enforcement officer authorized to detain temporarily any person under the provisions of subsection (2) has probable cause to believe that any person whom the officer has temporarily detained, or is about to detain temporarily, is armed with a dangerous weapon and therefore offers a threat to the safety of the officer or any other person, the officer may search such person so temporarily detained only to the extent necessary to disclose, and for the purpose of disclosing, the presence of such weapon. If such a search discloses such a weapon or any evidence of a criminal offense it may be seized.
(6) No evidence seized by a law enforcement officer in any search under this section shall be admissible against any person in any court of this state or political subdivision thereof unless the search which disclosed its existence was authorized by and conducted in compliance with the provisions of subsections (2)-(5).