The man accused of randomly stabbing two woman allegedly told police two weeks earlier that he believed he could hurt someone.
Shaun Michaels Dunk, 30, is accused of storming into REAL Estate Agents Group in Plympton, Adelaide, on Wednesday and attacking the workers with a knife, leaving Julie Seed, 38, dead.
Susan Scardajno, 50, is recovering from critical injuries at the Royal Adelaide Hospital.
Dunk, who has been charged with once count of murder and one count of attempted murder,