Kinds of determination of probable cause

The Supreme Court in People v. Castillo, et al.[1] briefly discussed the two kinds of determination of probable cause, executive and judicial, to wit:

x x x The executive determination of probable cause is one made during preliminary investigation. It is a function that properly pertains to the public prosecutor who is given a broad discretion to determine whether probable cause exists and to charge those whom he believes to have committed the crime as defined by law and thus should be held for trial. Otherwise stated, such official has the quasi-judicial authority to determine whether or not a criminal case must be filed in court. Whether or not that function has been correctly discharged by the public prosecutor, i.e., whether or not he has made a correct ascertainment of the existence of probable cause in a case, is a matter that the trial court itself does not and may not be compelled to pass upon.

The judicial determination of probable cause, on the other hand, is one made by the judge to ascertain whether a warrant of arrest should be issued against the accused. The judge must satisfy himself that based on the evidence submitted, there is necessity for placing the accused under custody in order not to frustrate the ends of justice. If the judge finds no probable cause, the judge cannot be forced to issue the arrest warrant.[2] 

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[1] 607 Phil. 754 (2009).

[2] Id. at 764-765.