Julian Assange is being held at HMP Belmarsh in southeast London. He faces a full extradition hearing next month

US intelligence agencies monitoring Julian Assange wanted DNA tests on a soiled nappy after his children visited him at the Ecuadorean embassy, a court has been told.

The claim was made as Assange sought an anonymity order for the mother of his children as part of an attempt to secure bail before a hearing next month in his fight against extradition to America.

The Wikileaks founder is to seek a judicial review of a ruling against granting anonymity to the woman, Westminster magistrates’ court heard. His defence have argued that she has a right to privacy despite submitting a statement to court in the bail proceedings that would normally be made public under the principle of open justice.

His partner’s statement contained reference to leaked