Malcolm Webster denies all the charges against him A man accused of killing his first wife in a crash in Aberdeenshire had four canisters of petrol in his car in the weeks before she died, a court heard.
Malcolm Webster, 51, denies murdering Claire Morris, in 1994 to fraudulently obtain £200,000 in insurance policies.
Susan Campbell said she warned her friend Ms Morris, 32, that carrying the petrol was dangerous and that her husband should know better.
Mr Webster also denies attempting to murder his second wife in 1999.
He is alleged to have deliberately crashed his car in Auckland, New Zealand, in February 1999, in a bid to kill Felicity Drumm, who was a passenger.
Mr Webster is also charged with forming a fraudulent scheme between 2004 and 2008 to enter into a bigamous marriage with Oban nurse Simone Banarjee, to get access to her estate, which he denies.
The trial, before Lord Bannatyne, continues.
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