The 32-year-old was arrested interstate on March 17 after three people were hurt in a house fire at Woodville West, that police believe was deliberately lit.
A 31-year-old man and two women, aged 27 and 28, inside the home were taken to the Royal Adelaide Hospital with serious burns.
The man died in hospital on March 20.
The Woodville West man was taken to a Sydney hospital under police guard after crashing his car in regional NSW before his arrest.
South Australian detectives travelled to NSW on Friday to escort him back to Adelaide where he is scheduled to appear in the Adelaide Magistrates Court today.
Police say all parties are known to each other, with the incident not considered a random attack.
Meanwhile, six people were taken to hospital with non-life-threatening injuries and a woman was airlifted to the Flinders Medical Centre in a critical condition following a serious crash at McLaren Vale late yesterday.
Emergency services were called to the intersection of Main Road and Johnston Road about 5.40pm after three cars crashed.
The intersection was closed in all directions for most of the night while emergency services and Major Crash were at the scene.
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