Unmasked: Campbelltown man accused of killing a woman and two boys - as new details emerge of his alleged triple-0 call...and the final act cops allege he planned to carry out

Md Shomon Ahamed, 47, was arrested at a property in Campbelltown, south-west of the CBD, about 8pm on Monday and charged with murdering an IT worker, 46, and two boys, aged 12 and four.