1. In a situation of crisis as defined in Article 1(4) of and in relation to illegally staying third-country nationals or stateless persons whose application has been rejected in the context of the asylum border procedure pursuant to Article 11(3), (4) and (6) of , who have no right to remain and who are not allowed to remain, Member States may derogate as follows:
(a) by way of derogation from Article 4(2) of this Regulation, Member States may prolong the maximum period during which those third-country nationals or stateless persons are to be kept at the locations referred to in that Article by an additional period of a maximum of six weeks;
(b) by way of derogation from Article 5(4) of this Regulation, the period of detention shall not exceed the period referred to in point (a) of this paragraph, and shall be included in calculating the maximum periods of detention set out in Article 15(5) and (6) of .
2. Paragraph 1 of this Article shall also apply to applicants, third-country nationals and stateless persons subject to the asylum border procedure whose application has been rejected before the adoption of the Council Implementing Decision referred to in Article 4(3) of and who have no right to remain and who are not allowed to remain after the adoption of that Implementing Decision.
3. Organisations and persons permitted under national law to provide advice and counselling shall have effective access to applicants held in detention facilities or present at border crossing points. Member States may impose limits to such actions where, by virtue of national law, such limits are objectively necessary for the security, public order or administrative management of a detention facility, provided that access is not thereby severely restricted or rendered impossible.