AUAD v. BULGARIA JUDGMENT 9 applicant has endeavoured to substantiate his or her application and has provided a good explanation for the lack of evidence. Section 58(7) requires the authorities processing asylum applications to obtain written comments by the State Agency for National Security. 30. Section 4(3) provides that individuals who have been granted protection under the Act or have entered Bulgaria to seek such protection cannot be returned to the territory of a country where their life or freedom are at risk on account of their race, religion, nationality, membership of a social group, their political opinions or views, or where they may face a risk of torture or other forms of cruel, inhuman or degrading treatment or punishment. However, section 4(4), which reflects a rule laid down in Article 33 § 2 of the 1951 Convention, provides that that benefit may not be claimed by aliens where there are grounds to regard them as a danger to national security. There is no reported case-law under that provision. 31. Section 67(1) provides that expulsion orders are not enforced until the asylum proceedings have been concluded. By section 67(2), expulsion orders are revoked if the person concerned has been granted asylum or humanitarian protection. However, those two provisions are not applicable to, inter alia, aliens whose presence in the country may be regarded as dangerous for its national security (section 67(3)). B. Expulsion of aliens on national security grounds 32. A detailed description of the evolution of the law governing expulsion on national security grounds until 2009 can be found in paragraphs 18-26 of the Court’s judgment in the case of C.G. and Others v. Bulgaria (no. 1365/07, 24 April 2008) and paragraphs 30-36 of the Court’s judgment in the case of Raza v. Bulgaria (no. 31465/08, 11 February 2010). The relevant provisions are contained in the Aliens Act 1998, as amended, and the regulations for its application. 33. Section 42(1) of the Act provides that an alien must be expelled when his or her presence in the country creates a serious threat to national security or public order. However, expulsion orders issued on national security grounds do no indicate the factual grounds for imposing the measure (section 46(3)). Under section 42(2), expulsion must be accompanied by withdrawal of the alien’s residence permit and the imposition of a ban on entering the country. 34. Expulsion orders issued on national security or public order grounds are immediately enforceable (section 44(4)(3)). However, if expulsion cannot be effected immediately or needs to be postponed for legal or technical reasons, the enforcement of the expulsion order may be suspended until the relevant obstacles have been overcome (section 44b(1)). 35. Expulsion orders may be challenged before the Supreme Administrative Court, whose judgment is final (section 46(2)). The lodging