I live in FL.
Then you are misinformed. Or lying.
Like many other states, Florida follows common law regarding citizen's arrest. Under Florida law, an average citizen can detain another indvidual until law enforcement arrives. However, this is only if they witness or have reasonable belief that the individual committed a felony.
http://www.cerinolaw.com/can-you-make-a-citizens-arrest-in-florida/
I don't think it's my place to do that.....