CAMDEN (AP) — The FBI is investigating what is being called the "unusual" transfer of $850,000 from the Camden National Bank.

Bank spokeswoman Diane Norton says the discrepancy was discovered earlier this month when a customer informed the bank of a discrepancy in his documentation.

Norton tells the Bangor Daily News the employee responsible for the transaction has been fired and the case turned over to the FBI. The former employee was not publicly identified.

Camden National Bank President Gregory Dufour says officials are disturbed a bank employee would conduct "fraudulent activity."

The bank says the money was transferred in a series of improper and unauthorized transactions.

The bank is now trying to recover the money.