Prime Minister Shinzo Abe on Tuesday instructed ministers to front-load spending earmarked in the fiscal 2016 budget in the period to September.

Abe cited growing uncertainties in the world economy, but some analysts see the move as a bid to buoy the economy prior to this summer's Upper House election.

"The Japanese economy remains on a recovery trend," Abe told a Cabinet meeting, according to Chief Cabinet Secretary Yoshihide Suga. "But it is a fact that uncertainties over the world economy are increasing.