@abc7chicago: At least one person was injured after an accessory dwelling unit, also known as an ADU, exploded at a residential property in Long Beach on Monday. The incident happened around 11 a.m. at a property at West 28th Street and Gale Avenue, according to the Long Beach Fire Department. Officials say the explosion originated from the ADU, which is located on the property behind the main home. Following the explosion, there were multiple small fires at the scene, but firefighters doused those quickly, said Jake Heflin, Long Beach Fire Department spokesperson.