Downing Street said the Government would resist any application for bail by cleric Abu Qatada.
"If he applies for bail, we will oppose it vigorously," a No 10 spokeswoman said.
Asked if the Prime Minister still had full confidence in Mrs May, the spokeswoman replied: "Yes."
She added: "It is our firm intention to see him deported."
Another twist in a political storm that has left critics questioning whether the Home Secretary has mishandled the Abu Qatada deportation
Law experts attending a conference on the future of the European Court of Human Rights believe the Home Secretary has got her dates wrong.
Clarity over Abu Qatada's appeal deadline will only come from the European judges. There will be lots of arguing over details.