The reporter called the detention ‘a failed attempt at intimidation.’ Greenwald has done a series of interviews with Edward Snowden about the security agency’s surveillance programs.

The longtime partner of the journalist who has reported a series of bombshell leaks on the National Security Agency was detained in London for several hours Sunday.

David Miranda, who lives with journalist Glenn Greenwald in Brazil, was held for nine hours in Heathrow Airport under a terrorism law, The Guardian reported.