shortly after hearing why he had been passed over for a promotion at the Centers for Disease Control and Prevention.
Cunningham, 35, told colleagues he was not feeling well and left work at CDC headquarters in Atlanta, not long after speaking with his supervisor about why he had not been promoted, Atlanta Police Maj. Michael O'Connor told reporters.
Cunningham had spoken to his sister by phone before arriving at work that day, and then called his mother at 9:12 a.m., presumably on his way home, O'Connor said. His mother did not pick up, and Cunningham did not leave a voice mail, according to authorities.
New details about the missing CDC worker
That was the last time the CDC epidemiologist made known contact with anyone, O'Connor said, setting into motion what would become a perplexing investigation.
Police have searched nearby woods with dogs, canvassed hospitals and jails, reviewed cellphone records, looked in cemeteries and even flown over the immediate area with a helicopter looking for signs of life - or worse.