No deal was reached between British Prime Minister David Cameron and European Union president Donald Tusk Sunday in talks aimed at pressing the UK's case for curbing the benefits European Union migrants can claim.

The talks would continue for another "crucial" 24 hours, Tusk announced.

"No deal yet. Intensive work in next 24 crucial," Tusk wrote on Twitter. Tusk has "agreed to another 24 hours of talks" before publishing a draft of an agreement, Cameron wrote on the site.