The proposals, which have been under discussion for nearly three years between the different EU institutions, cover issues such as the maximum amount of time that illegal immigrants can be held but officials declined to reveal details of the deal.
Sources familiar with the talks said the maximum detention period was set at six months but it could be extended to up to a total of 18 months in some circumstances.
EU countries currently have widely varying rules on how long illegal immigrants can be detained.
Representatives of the European Commission, the European Parliament and the European Council, which represents EU governments, agreed on the proposals on Wednesday.
They must now be voted on in the European Parliament and get backing by the Council.
The Socialist group in the EU legislature said it opposed the deal, chiefly because the proposed maximum detention period was too long.
The EU estimates there were up to 8 million illegal immigrants in the bloc in 2006. Around 500,000 were apprehended in the EU during that year.
Last Mod: 24 Nisan 2008, 15:50