A total of 15 MPs signed a parliamentary early day motion to express concern that the alternative news network was brought down in October.
Led by Labour MP Jeremy Corbyn, the motion requested that the home secretary should explain what authority was given to close the independent news service.
Signatories included Alice Mahon, Peter Bottomley and Tony Lloyd.
In parliament on 3 November, John McDonnell MP again asked the department to explain the legal authority of the seizure.
"I can only confirm that no UK law enforcement agencies were involved in the matter," said Caroline Flint, parliamentary under secretary of state at the Home Office.
"I am not at liberty to discuss the specific case in more detail."
More than 10,500 people have now signed a statement of solidarity on the Indymedia website.
Indymedia is now appealing for donations towards a new web server.
More news from dotJournalism:
Home Office under fire over Indymedia raid
Indymedia petition grows
MPs lobby for Indymedia
Free daily newsletter
If you like our news and feature articles, you can sign up to receive our free daily (Mon-Fri) email newsletter (mobile friendly).
Related articles
- Five tips for reporting on the UK Home Office
- Home Office quizzed on use of production orders against press
- Hunger-strike journalist wins leave to remain in UK
- NUJ to protest at UK border agency after journalist's deportation appeal rejected
- #Tip of the day from Journalism.co.uk - searching UK newspaper articles