Japan was opposed to the placing of sanctions on China by members of the Group of Seven industrialized countries on June 4, 1989, the day of Beijing's bloody crackdown on pro-democracy protests in Tiananmen Square, according to diplomatic records declassified Wednesday.

Concerned that it would isolate China internationally and about the potential for a worsening of bilateral ties, Japan decided on the course of action that day while preparing for the G7 summit, held the following month in France.

Japan was also initially opposed to adopting a joint G7 declaration condemning Beijing's violent actions, the records showed.