SACRAMENTO, Calif. -- The FBI is is on the hunt for a serial robber deemed the "stuffed-shirt bandit" who has apparently robbed five banks since September.

During his hold-ups, the bandit was seen stuffing cash into his shirt before he ran away.

Authorities said the robbery spree started last fall in Fairfield at a Bank of America branch. He struck again in Woodland at the Bank of the West, in Roseville at a River City Bank, and in Sacramento at a Bank of the West

His last suspected robbery was on Tuesday at a Wells Fargo Bank in Lincoln, officials said.

Officials are offering a $1,000 reward for any information on the bandit.