On Sunday, August 17th at about6:20 pm, the Azusa Police Department received calls of smoke coming from the San Gabriel Riverbed, near the bike path parking lot. Police officers were immediately dispatched and once they arrived, found a significant amount of smoke coming from the riverbed near a spillway.
Due to the nearby Tecolote fire burning above Azusa, fire fighters were immediately on scene. They quickly extinguished the fire with aerial water drops and ground crews.
While investigating the fire, officers were directed by witnesses to two people who may have been responsible for the fire. Officers contacted a 56 year old male and a 19 year old male, both from Arcadia, who were exiting the riverbed. They admitted to causing the fire and were cooperative with the officers. At this time, no arrests have been made.
The fire is being investigated by the Azusa Police Department's Detective Bureau, and investigators from the Los Angeles County Fire Department. Preliminarily, it appears the fire may have been caused by a homemade science experiment.