Asian stock closed mixed on geopolitical concerns. Market participants monitor escalating conflict in the Middle East.

Japanese stocks fell due to stronger yen. The yen rose against the U.S. dollar after comments by Japanese Prime Minister Shinzo Abe. Abe said he would carefully watch the impact of yen weakness on Japanese regional economies.

Japan's preliminary purchasing managers' index declined to 51.7 in September from 52.2 in August, missing expectations for an increase to 52.5.

Indexes on the close:

Nikkei 225 16,167.45 -38.45 -0.24%

Hang Seng 23,921.61 +84.54 +0.35%

Shanghai Composite 2,343.57 +33.86 +1.47%