Toby Keith just kicked off the 2013 leg of his Live in Overdrive tour, but the singer won't be able to meet his loyal fans as much as he has in the past. He has canceled all of his upcoming meet-and-greets, seemingly out of concern for his safety.

"Due to current security concerns, ALL personal meet and greet requests for friends, family, and Fan Club members have been discontinued," he posted on his website. "Thank you for your understanding."

No further explanation was given.

The Oklahoma native's latest single, "Hope on the Rocks," which is also the title track of his latest album, holds a special place in his heart.

"[It's] one of my favorite things I've ever written," Toby explains of the tune. "Last fall I was driving out to my hunting and fishing ranch in southern Oklahoma, and all the way there I had a verse and chorus going that I'd had for a couple months. I knew it was dark out there, but I just couldn't let it go. I spent two days down there and the whole time, whenever I wasn't talking to anybody, I was working that song in my head. I just hammered on it; completely obsessed."

Toby's next show is on February 9 at the San Antonio Stock Show and Rodeo. See a list of all of his upcoming concerts here.

Watch Toby Keith's 'Hope on the Rocks' Video