WASHINGTON (AP) — The FBI is investigating an apparent breach of its jobs website as a criminal hacking group claimed to have accessed "very sensitive data" on nearly all agents and job applicants.

"The FBI is aware of claims regarding unauthorized activity affecting FBIjobs.gov and is currently investigating," the bureau said in a statement. The website, the main portal for prospective employees to learn about the FBI and initiate the application process, remained offline Wednesday morning.

A message that circulated online from a hacking group known as ShinyHunters claimed responsibility for the hack.

The message, directed to FBI Director Kash Patel as well as the assistant director in the charge of the FBI's cyber division, said the hacking group had "c...