G.R. No. L-18515; January 31, 1963
GERONIMO E. CAPARAS, petitioner-appellee, vs. DOMINGO C. GONZALES and SANTIAGO L. LINDAYAG, as Chief of Police and Justice of the Peace, respectively, of Guiguinto, Bulacan, respondents-appellants.

FACTS

The Chief of Police of Guiguinto, Bulacan, filed a complaint before the Justice of the Peace Court charging Geronimo E. Caparas with serious physical injuries through reckless imprudence. The complaint alleged that Caparas, while driving a bus, operated it negligently, causing a passenger, Ho Mo, to fall and be run over by the rear wheel, thereby sustaining “serious physical injury.” During trial, the defense objected to the testimony of Dr. Guzman regarding the treatment of Ho Mo, arguing that the complaint contained no allegation that the injury required medical attendance. The defense contended that, at most, the crime charged was only slight physical injuries through reckless imprudence. The prosecution then moved to amend the complaint to specify the injuries as spinal concussion, massive hematoma, a ruptured urinary bladder, and shock, which would require medical attendance for two to three months and incapacitate Ho Mo from labor for the same period. The Justice of the Peace granted the motion over the defense’s objection.
Caparas filed a petition for certiorari with the Court of First Instance of Bulacan, arguing that the amended complaint introduced substantial new matters, prejudiced his rights, and violated his constitutional right to be informed of the accusation. The trial court granted the petition, ruling the amendment was one of substance, not form, and nullified the amended complaint and the order admitting it. The respondents appealed to the Supreme Court.

ISSUE

Whether the amendment to the criminal complaint is one of substance, thereby prejudicing the rights of the accused, or merely one of form, which is permissible under the rules.

RULING

The Supreme Court reversed the order of the Court of First Instance and sustained the amendment. The Court held that the amendment did not change the nature of the offense charged—serious physical injuries through reckless imprudence—nor did it allege new material facts. The original complaint already categorically alleged the infliction of “serious physical injury.” The amendment merely provided specific details (the types of injuries, need for medical attendance, and period of incapacity) of that general allegation. These details are particulars that could have been presented as evidence during the trial even without the formal amendment. Their inclusion in the complaint served to better inform the accused of the precise factual claims against him, thereby actually aiding his preparation of a defense. Since the amendment did not alter the essence of the crime or prejudice the accused by surprising him with a different charge, but only elaborated on the original accusation, it was an amendment of form, not substance, and was properly allowed by the Justice of the Peace. The case was remanded for continuation of the proceedings.