A powerful explosion occurred Monday morning in unincorporated north St. Louis County, Missouri, injuring at least three people and causing damage to multiple homes. County officials reported that five homes were destroyed in the blast. Among the injured is an 18-year-old who sustained life-threatening injuries. The explosion shocked residents in the area, with eyewitness accounts describing a sudden "crack" and "boom" during light rain. The incident has left the neighborhood severely affected, with emergency responders attending to the injured and assessing the damage.