A social networking site Diaspora where the Islamic State (IS) militants have been posting updates has admitted that it cannot stop the spread of extremist material.
The Islamic State militants switched to Diaspora recently after a blockade from Twitter.
The data on Diaspora cannot be controlled by any single administrator as it is stored on many private servers known as pods. This could be one of the reasons why the IS militants chose this network, said Diaspora authorities.
According to the BBC, Diaspora team also said that they were concerned about the activities taking place on their social networking site.
Diaspora is a start-up company that was set in 2010 by four students in New York.