Probable cause refers to reasonable excuse that is used to believe that a crime has been committed a one particular person and this is usually done to give justification for searching the person or charging him to court.
Probable cause is used as a standard by the police authorities under the United States criminal law to get a warrant to apprehend a suspected criminal or to obtain a search warrant to search him as a person or his property.
Therefore, the use of evidence such as the paper trail across the Willow Lane lawn that could link a person to the crime and even explain the cause of the crime is known as probable cause.