Marathon talks between David Cameron and EU leaders in Brussels have ended and will resume later as the Prime Minister tries to secure a reform deal.
The Prime Minister left the venue at around 5.30am, Brussels time, (4.30am GMT) and will return to the negotiations later, a Downing Street spokesman said.
Mr Cameron made no comment as he left following hours of negotiations involving European Council president Donald Tusk, French president Francois Hollande, Czech Prime Minister Bohuslav Sobotka and Belgian PM Charles Michel.
The Prime Minister was engaged in a last-ditch bid to secure an EU reform deal which will allow him to call a referendum on British membership on June 23.
Following a summit dinner that dragged on until 2.20am, Brussels time, Mr Tusk said: "We have made some progress but a lot still remains to be done."
Mr Cameron warned EU leaders on Thursday that he was ready to walk away from their summit in Brussels without a deal unless they gave ground on key British demands and provided him with a "credible" package he can sell to voters.