Derek Chauvin trial: top crime scene investigator into George Floyd’s death testifies – as it happened

• McKenzie Anderson is questioned over processing of the SUV
• Day eight of murder trial over George Floyd's death continues
• Police trainer: Knee on subdued suspect's neck not allowed
• Medical trainer: Just because they're speaking doesn't mean they're breathing'

11.04pm BST

The eighth day of testimony in the Derek Chauvin murder trial has come to a close.

Two major themes have solidified during Wednesday's testimony. The prosecution has tried to convey through their witnesses that Chauvin's use-of-force wasn't necessary. On cross examination, Chauvin's attorney, Eric Nelson, has attempted to argue that this is a situational assessment.

10.51pm BST

Breahna Giles, a forensic scientist with Minnesota BCA concluded some brief testimony. She tested two pills found in the Mercedes SUV. She says they had been labelled oxycodone & acetinophen but tested positive for methamphetamine and fentanyl.

Her testimony is very quick and doesn't directly relate to any interactions between Floyd and Chauvin.