WATCH: videos from the scene of an explosion that destroyed three homes Monday morning in north St. Louis County. | KMOV

The sound of the North County explosion was captured on video. Police said that three people were injured and at least 20 homes were damaged. The Red Cross has opened a shelter at Saint Angela Merici, 3860 N. Highway 67 in Florissant, for those impacted by the explosion. | KMOV