The Supreme Court of Victoria is examining video footage showing Erin Patterson at a service station the day after the fatal mushroom lunch, along with testimony challenging the reliability of mobile phone data evidence in tracking her movements.

• Security footage from 30 July 2023 shows Erin Patterson visiting a BP service station around 24 hours after the fatal lunch
• Ms Patterson spent nine seconds in the bathroom before purchasing snacks including confectionery and sandwiches
• Prosecution previously highlighted that Ms Patterson had not indicated needing a toilet break during her drive
• Telecommunications expert Dr Matthew Sorrell acknowledged limitations in phone data analysis
• Defence established that phone data only "allows for the possibility" of visits to locations but doesn't confirm them
• Expert confirmed phones can switch between cell towers with minimal movement, even just 20-30 metres
• Erin Patterson faces three counts of murder and one count of attempted murder after allegedly serving deadly mushrooms
• Three family members died after the mushroom lunch while a fourth survived after hospitalisation.

Erin Patterson is pleading not guilty to all charges. 

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