A bank employee has been found guilty of sketching robbery plans which were then used by her boyfriend to carry out a raid at a branch in Leeds.
Rachel Shariar-Namini provided inside information about a Natwest branch she worked at to help aid the £370,000 robbery, Leeds Crown Court heard.
This was then used by her boyfriend William Wormald and accomplices Darren Ashcroft and David Cowie.
Shariar-Namini, 23, of Victoria Avenue, Rothwell, was found guilty of robbery.
She was warned by Judge Sally Cahill QC that she faces a "substantial custodial term" when she is sentenced in the week beginning 20 September.
The case was adjourned for the preparation of a pre-sentence report and Shariar-Namini was remanded in custody.
The court was told the robbery took place at the Natwest branch in Church Street, Hunslet on 9 March.
In police interviews, Shariar-Namini recalled a drunken night when she wrote on the plans, but denied sketching them out, claiming it was her boyfriend who drew them.
The jury was told Wormald and Ashcroft, who were masked, entered the bank and took the money from a temporary storage area where it was waiting to be collected by Securicor.
It is alleged Shariar-Namini had "detailed knowledge" of the layout and procedures having previously worked at the Hunslet branch until about a month earlier when she was promoted and moved to Rothwell as manager.