Japan’s core inflation rate expanded in April to 3.5 per cent.
Overall unadjusted inflation was 3.6 per cent, the same level as it was in March.
Excluding energy, prices rose by 3 per cent compared to 2.9 per cent in March.
Underlying inflation has been above the central bank’s 2-per cent target rate for around three years.
Tariffs are fuelling global economic uncertainty, the bank cautioned.