Firefighters are still fighting a blaze in severe conditions in the Adelaide Hills.
Erratic conditions and wind are making it difficult for the CFS to tackle the Cherry Gardens grass fires, though as of 10.14am, crews managed to bring the alert level down to a 'Watch and Act' from 'Emergency' earlier in the morning*.
Road conditions may become very dangerous over the next few hours and there are road closures in place.
Authorities are determining the cause of the fires and whether they have any connection to the nearby Clarendon blaze.
Police have arrested a man after he was caught leaving the scene at Clarendon just after 6pm on Sunday.
It is alleged that a patrol spotted his vehicle speeding away from a fire that started on Piggott Range Road.
Any witnesses, and those with dashcam footage, are being urged to contact Crime Stoppers on 1800 333 000, or online at crimestopperssa.com.au.
Police are also investigating a suspicious fire, west of Gumeracha, that broke out at 7am on Sunday and was quickly contained.
Crews have since found a small gas camping stove at the origin of the Gumeracha fire.
*The fire conditions and warnings are continually changing. For updates listen to the radio on a battery powered radio, visit the CFS website www.cfs.sa.gov.au or phone the Bushfire Information Hotline on 1800 362 361.
Photo of Cherry Gardens fire from Bridgewater on evening of 24 January 2021, Jennie Lenman