In State v. Lucas, 56 Wn. App. 236, 783 P.2d 121 (1989), review denied, 114 Wn.2d 1009, 790 P.2d 167 (1990), probation officers observed a container of marijuana in the defendant's home. Four days later the officers conducted a warrantless search of the home. The court concluded that this observation, coupled with the fact the defendant acted in a nervous manner when the officers arrived at his home to conduct a transfer interview, constituted a well-founded suspicion that the defendant was involved in criminal activity in violation of his conditions of release. Lucas, 56 Wn. App. at 244-45.