TOKYO (Kyodo) -- Tokyo stocks were mixed Thursday morning as investors locked in gains following recent rises, while the market was supported by buying of semiconductor shares that tracked their U.S. counterparts higher.

The 225-issue Nikkei Stock Average climbed 83.49 points, or 0.23 percent, from Thursday to 36,863.15. The broader Topix index was down 4.80 points, or 0.18 percent, at 2,691.36.

The U.S. dollar remained mostly unchanged in the upper 143 yen range in Tokyo, after the U.S. Federal Reserve kept its key interest rate steady as expected at its policy meeting, dealers said.

At noon, the dollar fetched 143.67-68 yen compared with 143.75-85 yen in New York and 143.18-20 yen in Tokyo at 5 p.m. Wednesday.

The euro was quoted at $1.1322-1324 and 162.66-70 yen against $1.1297-1307 and 162.51-61 yen in New York and $1.1362-1364 and 162.69-73 yen in Tokyo late Wednesday afternoon.

The Nikkei stock index was lifted by heavyweight chip-related issues after their U.S. counterparts climbed on a report that the U.S. administration is considering easing curbs on chips used for artificial intelligence technology.

However, the market was weighed down by selling to lock in gains, while some investors took a wait-and-see stance ahead of the release of an earnings report from Toyota Motor Corp. in the afternoon and U.S.-China tariff talks slated for this weekend.