Short answer. Under Article 248 of the Revised Penal Code, killing by poison, explosion, or fire is a qualifying circumstance that makes the killing murder — but the article still requires that the killing not fall under parricide. The method alone elevates the charge, though specific family relationships carry a separate classification.
What the law says
By means of inundation, fire, poison, explosion, shipwreck, stranding of a vessel, derailment or assault upon a railroad, fall of an airship, or by means of motor vehicles, or with the use of any other means involving great waste and ruin.
Revised Penal Code, Article 248 — Murder And Its Qualifying Circumstances. Read the full provision →
How Article 248 classifies poison, fire, and explosion
Article 248 of the Revised Penal Code lists the circumstances that convert a killing into murder. One of those circumstances is killing by means of inundation, fire, poison, explosion, and several other methods involving mass destruction. When any of these means is used to kill another person, the killing is murder — not simply homicide. The penalty under this provision is reclusion perpetua. The provision still refers to the death penalty, but Republic Act No. 9346 (2006) prohibits its imposition; in its place reclusion perpetua applies.
The parricide exception
Article 248 applies to any killing not falling within Article 246. Article 246 covers parricide — the killing of a father, mother, child, ascendant, descendant, or spouse. If the victim stands in one of those family relationships to the killer, the charge is parricide regardless of the method used. This means that poisoning a stranger is murder under Article 248, while poisoning one's own parent falls under Article 246. The method of killing is what triggers the murder classification only when the parties are not related by parricide's family ties.
Why these methods qualify — the element of danger to others
The methods grouped under this circumstance — fire, explosion, poison, flood, shipwreck — share a common character: they are difficult to control and carry substantial risk of harming people beyond the intended victim. Poison placed in food may affect multiple people. An explosion endangers bystanders. Arson spreads. The law treats these methods as especially aggravated because the means chosen goes beyond the individual killing and threatens the broader community. That amplified danger is part of why they qualify the killing as murder.
Other qualifying circumstances also apply
Poison, fire, and explosion are not the only qualifiers in Article 248. The same provision also covers killings committed with treachery, advantage of superior strength, evident premeditation, for a price or reward, on the occasion of a calamity, or with cruelty. When multiple qualifying circumstances are present — say, both poison and evident premeditation — the presence of more than one does not multiply the penalty, but it may be considered as an aggravating factor in the sentencing. Each circumstance standing alone is already sufficient to classify the killing as murder.
What this means if you are involved in a case
Whether a killing is charged as murder, homicide, or parricide matters enormously for the outcome — the penalties differ significantly and so do the defenses available. If you or someone you know faces charges, or is the victim's family trying to understand how a case will proceed, the characterization of the method used and the relationship between the parties are the first questions any lawyer will examine. These classifications are not technical details; they determine whether the crime is bailable and what the range of possible penalties is.