TOKYO, April 17 (Xinhua) -- Tokyo stocks were range bound Tuesday morning as investors both bought on the back of U.S. shares advancing overnight and sold on a halt in the yen's decline against the U.S. dollar amid a cautious mood ahead of a Japan-U.S. summit starting later Tuesday.

The 225-issue Nikkei Stock Average edged up 1.86 points, or 0.01 percent higher, from Monday to 21,837.39.

The broader Topix index of all First Section issues on the Tokyo Stock Exchange, meanwhile, shed 3.83 points, or 0.22 percent, at 1,732.39.

Food and land transportation issues comprised notable advancers, while iron and steel and nonferrous metal-linked issues led decliners by the morning break.