A Japanese nongovernmental organization called on Environment Agency officials Thursday to establish efficient domestic measures to meet reduction targets for carbon dioxide and other greenhouse gases as stated in the 1997 Kyoto Protocol, rather than exploiting potential loopholes in the agreement.

Members of A SEED Japan handed out bamboo cups punctured with holes to officials in front of the agency's Tokyo headquarters in Chiyoda Ward, saying, "Please do not make any loopholes in the countermeasures for global warming."

The gesture came ahead of the sixth Conference of Parties to the U.N. Framework Convention on Climate Change (COP6), to be held this month in The Hague.