(KAIR)--Questionable activity on several bank accounts at a local Atchison bank lands one Atchison woman behind bars.

“That investigation led to the discovery of theft and forgery and quickly focused on an employee at the bank,” said Atchison Police Chief Mike Wilson. “20-year-old Erika Martinez was taken into custody on Thursday.”

Wilson says officers began the investigation earlier this week after the suspicious activity was reported. He says Martinez allegedly stole more than $20,000 from the bank over a period of two months.

“Between October and December of 2016, so the investigation determined that this happened over a period of time,” Wilson said. “It wasn’t just one incident or a scheme that was narrowed to a particular day, it was over a period of time between those months.”

Martinez was booked into the Atchison County Jail where she remains held on a $15,000 bond.