Which instance would typically not lead to probable cause for an arrest?

In assessing the factors that contribute to establishing probable cause for an arrest, consistently unreliable anonymous tips stand out as a situation that typically does not generate sufficient grounds for probable cause. Probable cause requires a belief that a crime has been, or will be, committed based on reliable information.

Corroborated eyewitness accounts provide strong support for probable cause because they involve individuals who have witnessed the event and can provide credible, direct information. Physical evidence linking a suspect to the crime solidifies the case further, as it offers tangible proof of involvement. Similarly, knowledge of previous similar offenses can inform an officer's judgement, noting patterns of behavior that could indicate the likelihood of current unlawful activity. However, if the advice comes from anonymous tips known to be unreliable, it cannot uphold the legal standard necessary for probable cause. This unreliability diminishes the significance of such information, making it insufficient for action like an arrest.