What is the U. S. Supreme Court's definition of probable cause? For practical purposes, when does probable cause exist?

Explanation:

U.S. Supreme Court's definition of probable cause when the facts and situations are within the officer's knowledge. The knowledge is reasonably trustworthy and are sufficient to make believe that a crime has been committed and certain property is connected with the crime. Probable cause must exist for a law enforcement officer to make an arrest without warrant or search without warrant or seize the property.