The Iranian Foreign Ministry summoned British Ambassador Simon Gass to their offices today and handed him a letter of protest, the Mehr news agency reported.
Earlier, two members of the Mojahedin Khalq Organization, who are currently under arrest and are suspected of arranging a future terrorist attack in Tehran, admitted to having planned a bombing with individuals in Sweden and the UK.
National Security Minister Heydar Moslehi accused France, the UK and Sweden of supporting the Mojahedin Khalq Organization June 13.
The group is accused of planning an explosion in Tehran later this month on the anniversary of the last presidential election.
The Mojahedin Khalq Organization has been based in the Iraqi city of Ashraf for 30 years. It is included in the blacklist of terrorist groups by the United States and Europe.