COLTON: 11:19 am this morning and Firefighters were again responding to a Vegetation Fire in the River Bottom. Colton, Rialto, and San Bernardino Fire Departments responded to multiple 911 calls for the Fire located near the intersection of Riverside Ave and Miguel Bustamante Pkwy. We arrived on scene to four or more transients attempting to put out the fire using shovels. Within a couple of minutes, the first Rialto engine arrived on scene and made access down the side of the embankment with a hose line. The Fire Fighters made quick work of the fire, containing it to 1/2 an acre. The cause of the fire was unknown, and did not appear to be located near any homeless encampment.