Erin Patterson laced a beef Wellington with poisonous mushrooms for a dinner which led to the deaths of three relatives, and now former work colleagues in Australia have told about her odd behaviour

The jury in Erin Patterson's trial sat through weeks of evidence before convicting her of murder. On Monday, Patterson was found guilty of the murders of her parents-in-law Don and Gail Patterson and Gail's sister Heather Wilkinson. She was also found guilty of the attempted murder of Heather's husband Ian.