Mumbai, April 3 -- Japanese markets led regional losses as tariff concerns and a stronger yen hit exporters. The Nikkei average plunged 2.77 percent to 34,735.93 while the broader Topix index settled 3.08 percent lower at 2,568.61. Nissan Motor, Toyota Motor, Canon, Sony and Panasonic lost 4-7 percent.

In the tech sector, Softbank tumbled 3.9 percent, Advantest gave up 4.5 percent and Tokyo Electron shed 3.7 percent.

Japan services sector stagnated in March and contrasted with expansions in the past four months due to subdued market conditions, final data from S&P Global showed on Thursday.

The au Jibun Bank Japan services Purchasing Managers' Index fell to 50.0 from a six-month high of 53.7 in February. The flash score was 49.5.

At 4...