In the town of Baikalsk, located in Russia's Irkutsk region, a teenage boy murdered four companions before setting a house ablaze and ultimately taking his own life. Media reports indicate the violent act stemmed from the youth's anger after being rejected for sexual relations by an acquaintance.

Here's a rewritten version while maintaining all key details:

The Incident: On May 28, a tragic event occurred at a private residence in the "Gorny Baikal" garden community near Baikalsk, claiming the lives of five teenagers. Authorities report the group was celebrating a birthday when the violence erupted. Media sources indicate all victims attended the same school, ranging in age from 13 to 17 years.

According to the Irkutsk region governor, one teenager suddenly turned on the others, fatally stabbing four victims before setting the house ablaze. The attacker perished in the resulting fire.

Four additional youths sustained injuries in the attack. One victim remains in critical condition with severe neck wounds, while the others are receiving hospital treatment. Investigators have initiated criminal proceedings under charges related to multiple homicide.