WASHINGTON — The FBI continued to improperly obtain private telephone, e-mail, and financial records five years after it was granted expanded powers under the USA Patriot Act, according to a report issued yesterday.

In a review focusing on FBI investigations in 2006, the Justice Department inspector general, Glenn Fine, found numerous privacy breaches by the bureau in its use of national security letters, which allowed the FBI to obtain personal information on Americans and foreigners without approval from a judge. The findings mirror a report issued by Mr. Fine’s office last year, which concluded that the FBI had improperly used the letters to obtain telephone logs, banking records, and other personal data between 2003 and 2005.

The pattern persisted in 2006, Mr. Fine concluded in the report issued yesterday, in part because the FBI had not yet halted the shoddy record-keeping, poor oversight, and other practices that contributed to the problems.

“The FBI and Department of Justice have shown a commitment to addressing these problems,” Mr. Fine said in a statement. “However, several of the FBI’s and the Department’s corrective measures are not yet fully implemented, and it is too early to determine whether these measures will eliminate the problems with the use of these authorities.”