Amarildo Silva, of East Boston, has pleaded guilty and was sentenced to serve time in state prison in connection with using a fake identity to forge documents and steal more than $100,000 from local banks, according to Attorney General Martha Coakley’s office.

Silva, 30, pleaded guilty to charges of forgery (five counts), uttering (three counts), larceny over $250 (three counts), identity theft and falsification of a license. Silva was sentenced to one to three years in state prison.

Silva’s sister, Edna DaSilva, recently pleaded guilty in November to charges of identity fraud and falsification of a license, according to a statement. She was sentenced to two years in prison, with four months to serve, and the balance suspended for a probationary period of two years.

An investigation revealed that Silva defrauded auto auctions in Lynn, Quincy, North Dighton and Framingham by using a fake identity and creating counterfeit checks, according to a statement. Investigators discovered that Silva created counterfeit copies of the legitimate checks from the auto auctions, issued checks to himself and deposited these checks into bank accounts he held at various banks throughout the state. Silva made withdrawals totaling more than $120,000 from the banks. Several of the banks noticed that the checks were counterfeit and froze Silva’s accounts.

Investigators discovered that after the bank accounts had been frozen, Silva brought his sister, DaSilva, to a bank to open an account in the name of a fake landscaping company, according to a statement. DaSilva used a fake identity to try and open this new bank account.