The FBI was searching for an armed man who robbed a Citibank branch Friday morning in the Loop.

The man walked in the bank located at 222 W. Adams St. and approached a teller with a handgun, the FBI said Saturday.

The gunman is described as being black and between the ages of 40 and 50. According to police, he was wearing grey slacks, a black hoodie, a long coat, and a long black scarf over his face revealing only his eyes. The scarf was tied in the back.

He took $20,335 with no dye pack after screaming at the teller: "This is serious, do not use a red dye pack. Give me all your money. Hurry up, hurry, up," the report said.

He fled out a side door and no one was hurt.

The FBI is offering a reward for information leading to his arrest and conviction.

Anyone with information should contact the FBI Chicago office at (312) 421-6700.

Twitter: @ChicagoBreaking