You are arrested when a law enforcement officer takes you into custody or takes away your freedom of movement in any significant way, in order to hold you to answer for a criminal offense. Police officers, under Florida law, are required to identify themselves and to advise you that you are under arrest and the reason for your arrest, unless you try to flee or forcibly resist before the officer can give you this information. You may be under arrest even though no one has actually used the word “arrest”.  The fact that you have been deprived of your freedom of movement in some significant manner may amount to an arrest. Ordinarily, private citizens do not have power to arrest another citizen in Florida, but may assist police officers in making arrests if the officer feels such assistance is necessary[1].

[1] §§ 901.16, 901.17, and 901.18, Fla. Stat.