U.S., Japan agree must tighten North Korea sanctions: official

LECCE, Italy (Reuters) - U.S. Treasury Secretary Timothy Geithner and Japanese Finance Minister Kaoru Yosano have agreed they must tighten sanctions against North Korea, a senior Japanese official at the Group of Eight finance meeting said.

"Both ministers agreed that we must tighten sanctions against North Korea," the Japanese official told reporters on Friday after a meeting between the two men.

He also quoted Yosano as saying he was extremely concerned about North Korea's nuclear test.

(Reporting by Natsuko Waki; Writing by Jo Winterbottom; Editing by Andrew Torchia)