(1972); Katz v. United States, 389 U.S. 347, 357, 88 S.Ct. 507, 19 L.Ed.2d 576 (1967); Jones v. United States, 357 U.S. 493, 499, 78 S.Ct. 1253, 2 L.Ed.2d 1514 (1958); McDonald v. United States, 335 U.S. 451, 456, 69 S.Ct. 191, 93 L.Ed. 153 (1948); Hornblower v. State, 351 So.2d 716 (Fla.1977); Taylor v. State, 355 So.2d 180 (Fla. 3d DCA 1978).
A
In the instant case, the search of the defendant’s private property, to wit: his suitcases in the airline baggage area, was conducted by the police without a search warrant and was therefore presumptively unreasonable. The state argues, however, that the seizure of the marijuana from the first suitcase was a valid plain sight seizure of contraband which excused the necessity of obtaining a search warrant therefore. We disagree.
In a long line of cases, the Florida and federal courts have held that it is not a search for the police to discover evidence in plain sight. The warrantless seizure of such evidence is constitutionally permissible providing three requirements are met: (1) the police must observe the evidence in plain sight without the benefit of a search [i. e., without invading one’s reasonable expectation of privacy], (2) the police must have a legal right to be where they are when they make the plain sight observation, and (3) the police must have probable cause to believe that the evidence seen constitutes contraband or fruits, instrumentalities or evidence of crime. Harris v. United States, 390 U.S. 234, 88 S.Ct. 992, 19 L.Ed.2d 1067 (1968) and cases collected; Sheff v. State, 329 So.2d 270 (Fla.1976); Spinkellink v. State, 313 So.2d 666 (Fla.1975); State v. Ashby, 245 So.2d 225 (Fla.1971); State v. Parnell, 221 So.2d 129 (Fla.1969); Fletcher v. State, 65 So.2d 845 (Fla.1953); State v. Clarke, 242 So.2d 791 (Fla. 4th DCA 1970); Boim v. State, 194 So.2d 313 (Fla. 3d DCA 1967). Such plain sight seizures have been treated either as an exception to the search warrant requirement rule, Coolidge v. New Hampshire, 403 U.S. 443, 464-473, 91 S.Ct. 2022, 29 L.Ed.2d 564 (1971), or as being entirely beyond the scope of Fourth Amendment protection. Hornblower v. State, 351 So.2d 716, 718 (Fla.1977). In any event, a search warrant is not required in order for the police to conduct such a constitutional seizure.
In the instant case, the police officers had every right to be where they were when they observed the black plastic trash-bags contained in the first suitcase, which suitcase was laying open in the airline baggage area. It is clear, however, that they observed at this point no contraband marijuana in-plain sight. It was necessary for the officers to conduct a search by slitting open the black plastic trashbags in order to discover the marijuana. As such, no valid plain sight seizure of contraband from the first suitcase was ever accomplished and the search and seizure conducted therein was unreasonable. Carr v. State, 353 So.2d 958 (Fla. 2d DCA 1978).
B
The state next contends that the warrantless search of the second and third suitcases was reasonable because it was based on probable cause and was conducted under exigent circumstances which made it impracticable to obtain a search warrant. Here the state apparently relies on a general exception to the search warrant requirement rule that “[pjrobable cause to search plus exigent circumstances will usually justify a warrantless search.” Raffield v. State, 351 So.2d 945, 947 (Fla.1977). We find this exception inapplicable to the instant case.
The search of the second and third suitcases was based entirely on the fruits of the unreasonable search of the first suitcase. As such, there was no probable cause for the search of the second and third suitcases under the fruit of the poisonous tree doctrine. The unreasonable search of the first suitcase fatally tainted the subsequent search of remaining suitcases. “Evidence which is located by the police as a result of information and leads obtained from illegally seized evidence, constitutes ‘the fruit of the poisonous tree’ and is equally inadmissi