WICHITA, KS—A former employee was sentenced Monday to 21 months in federal prison for stealing at least $289,000 from a Wichita bank, U.S. Attorney Barry Grissom said.

Lisa Marie Evans, 43, Wichita, Kan., pleaded guilty to one count of embezzlement. In her plea, she admitted that from 2011 to 2013 she stole the money while working for Southwest National Bank in Wichita. She was responsible for balancing the bank vault on a daily basis. A surprise audit in April 2013 revealed the theft. Investigators examined security footage of the vault that showed Evans taking money from the vault and hiding it on her person.

Grissom commended the FBI and Assistant U.S. Attorney Aaron Smith for their work on the case.