Authorities in New York said they want to talk to the two men, who they believed found a pressure cooker bomb in a piece of luggage. The men took out the bomb but took the luggage.
Ahmad Khan Rahami was charged Tuesday in bombings and attempted bombings in New York and New Jersey. The FBI first looked into Rahami two years ago but didn't find enough for a full investigation.
The impersonation came about after police in Washington state couldn't identify a suspect who repeatedly sent threatening emails to a high school in the Seattle area.
The former secretary of state under Republican George W. Bush used a personal computer connected to a private phone line to get around State Department servers.
A U.S. nuclear engineer is accused of spying for China. Chinese economic espionage costs the U.S. billions each year. The case raises questions about whether Chinese-Americans are unfairly targeted.
Kun Shan Chun, a naturalized U.S. citizen with top secret security clearance, had worked at the FBI since 1997. Chun pleaded guilty on Monday to acting as an agent of China.
The FBI says it is giving up on the D.B. Cooper investigation, 45 years after the mysterious hijacker parachuted into the night with $200,000 in a briefcase, becoming an instant folk figure.
FBI Director James Comey said ultimately Hillary Clinton should not be charged in connection with her private e-mail server. However, some of the facts of the case he laid out differ from hers.