Jim Hammon, chairman of the chamber's executive board, said he and the board will be responsible for the day to day operations until an interim director is appointed. A committee has been formed to find a new CEO, he said.
The press release said Chiles had resigned to "pursue other interests." Efforts this morning to reach Chiles were unsuccessful.
The shakeup comes at a busy time of year for the chamber, which started taking registrations Friday for its annual Fourth of July parade and the Liberty Festival that afternoon on the Snake River Greenbelt. Other chamber-sponsored events coming soon include A Taste of Idaho and the annual golf tournament.
"We are working hard to make sure events this summer go off without a hitch," Hammon said.