An unidentified male bank robbery suspect wanted in connection with at least nine robberies within the last five months is being sought by the FBI and law enforcement agencies in Los Angeles and Santa Barbara counties. 

The suspect, dubbed the "Seasoned Bandit," described as a white male in his 50s or 60s, wearing casual clothing, a hat and sunglasses, can be seen in bank surveillance photographs, which have been shared with the public. The moniker was assigned based on the suspect's age and gray-white hair. 

The suspect allegedly robbed Montecito Bank and Trust in Carpinteria on April 27, Union Bank in Carpinteria on May 24, a Wells Fargo in Newhall on June 12, a Chase Bank in Newhall on June 27, a Golden 1 Credit Union in Goleta on July 7 and Logic FCU in Valencia on July 25. 

He then reportedly targeted a California Credit Union in Valencia on Aug. 10 and a Wescom Credit Union in Stevenson Ranch on Aug. 21 before retargeting Santa Barbara County.

On Sept. 6, the suspect allegedly robbed Coast Hills Credit Union in Santa Maria.

During the heists, the suspect usually passes a note in which he demands cash and threatens to use his gun if the bank teller does not comply with his demands, officials said. 

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The investigation is a multi-agency effort between Santa Barbara and Los Angeles counties Sheriff's Offices, Santa Maria Police Department and the FBI. 

Anyone with information as to the identity or whereabouts of the Seasoned Bandit is urged to call law enforcement agencies or call 911. The FBI in Los Angeles can be reached at 310-477-6565.

Gina Kim covers crime and courts for Santa Maria Times. Follow her on Twitter @gina_k210