Turns Out The S.C. Gov. Is On A Hike -- Update: He'll Be Back Wed. : The Two-Way S.C. Gov. Mark Sanford goes missing. He's on a hike.

Turns Out The S.C. Gov. Is On A Hike — Update: He'll Be Back Wed.

The mystery of where South Carolina Gov. Mark Sanford is has been for the past several days has been solved.

As The State and other news media are reporting, Sanford's aides say he is hiking on the Appalachian Trail.

Still not fully explained: Why he apparently left without telling most other state officials and has been out of contact. State Sen. Jake Knotts, a fellow Republican, tells the newspaper that the governor should never be unreachable.

"As the head of our state, in the unfortunate event of a state of emergency or homeland security situation, Governor Sanford should be available at all times to the chief of SLED," the senator said. "I want to know immediately who is running the executive branch in the governor's absence."

Update at 3 p.m. ET: The governor's office now says he'll be back on the job tomorrow.

The Associated Press reports that:

"Governor Sanford called to check in with his chief of this morning," Sanford spokesman Joel Sawyer said Tuesday in a statement. "It would be fair to say the governor was somewhat taken aback by all of the interest this trip has gotten. Given the circumstances and the attention this has garnered, the governor communicated to us that he plans on returning to the office tomorrow."