What is meant by 'probable cause plus' in the context of warrants?

'Probable cause plus' refers to a legal standard that requires a higher level of evidence than just probable cause for certain types of warrants, particularly those that involve bodily intrusion, such as body cavity searches. This heightened requirement is in place to ensure that an individual's constitutional rights are adequately protected, given the invasive nature of such searches. Law enforcement must demonstrate that there is not only a reasonable belief that a crime has occurred but also that the circumstances justify the more invasive warrant due to specific, compelling reasons.

In contrast, the other options do not accurately reflect the meaning of 'probable cause plus.' For instance, a mere suspicion does not fulfill the legal requirements for warrants; instead, an established probable cause is necessary. Additionally, the focus of 'probable cause plus' is not solely on the necessity of an arrest warrant or on witness testimony; these elements can be relevant in different legal contexts but do not specifically capture the essence of heightened scrutiny associated with bodily intrusion warrants.