Answer :
prob·a·ble cause
noun
reasonable grounds (for making a search, pressing a charge, etc.).
"warrants allow police to detain people, but not handcuff and search them without probable cause"
In United States criminal law, probable cause is the standard by which police authorities have reason to obtain a warrant for the arrest of a suspected criminal or the issuing of a search warrant. It is also the standard by which grand juries issue criminal indictments.
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