The European Union says poor countries have stopped their boycott of climate change negotiations at Copenhagen and have found a solution to their dispute with rich nations.

The EU environment spokesman Andreas Carlgren says informal talks at Copenhagen resolved the impasse.

Developing countries brought the negotiations to a halt earlier Monday with their demand that rich countries offer much deeper cuts in their greenhouse gas emissions.

The move disrupted the 192-nation conference and forced the cancellation of formal working groups, delaying negotiators who are trying to resolve technical issues before the arrival of more than 110 world leaders later this week.

The developing nations were trying to shift the U.N. talks' agenda to focus on the responsibilities of the industrial countries to halt global warming.