Jasmin Sahib, a Hayward resident, was arrested around 8 p.m. Wednesday, Jan. 29, according to police.
Cmdr. Dave Bertini said investigators had her in mind as a suspect since early January, after someone who saw surveillance photos released by the FBI thought the suspect looked familiar and contacted law enforcement.
Ms. Sahib is allegedly linked to the Oct. 29 robbery of Bank of the West on Santa Cruz Avenue and the Nov. 8 robbery of U.S. Bank on El Camino Real.
Dubbed the "sports cap bandit," a woman walked into the banks, handed tellers a note saying she had a gun and demanded money. She left with less than $5,000 total for both robberies. No one was injured.
Witnesses described the suspect as wearing a red baseball cap marked "C" in one case, and a blue and gold hat marked "Nuggets" in the other.
Cmdr. Bertini said he didn't know if she was linked to other crimes in the Bay Area. Ms. Sahib was not on probation or parole at the time of her arrest.