Exam CRCM topic 1 question 232 discussion

The manager of Main Street branch calls and relates the following information: John Smith purchased a cashier's check for $1,000 cash at 10:00 a. m. on
Tuesday. At 11:30 a. m. Mr. Smith returned and purchased a cashier's check for $2,500 cash and deposited traveler's checks totaling $9,000 into his checking account. At 4:00 p.m. Mr. Smith returned and deposited $8,000 cash into his checking account. This deposit was after normal banking hours, so it was recorded as of Wednesday's business date. What action should the bank take?