Police say charges against 35-year-old Elizabeth Angelopoulous of Calgary include identity fraud, possession of credit card data and obstruction.
Mounties say Angelopoulous was arrested in North Vancouver after she allegedly attempted to withdraw a significant amount of money with fraudulent bank and identification cards.
Police say a teller noticed irregularities in documents and contacted police when the woman abruptly left the bank.
They say her co-accused, 21- and 23-year-old brothers Emmanuel and Samuel Chiasson, were arrested in Calgary on charges of extortion and fraud over $5,000.
The pair have been brought to B.C. to face criminal charges and police believe they coerced and threatened Angelopoulous into committing the bank frauds.