Prime Minister David Cameron has ordered British intelligence agencies to investigate Muslim Brotherhood activities in his country.
The move follows orders by Egypt and Saudi Arabia to outlaw the group, and allegations that its members plotted terrorist attacks from offices in Britain. British newspapers confirmed an original report in the Times of London about Cameron's order.
A number of Brotherhood officials moved to Britain following last July's ouster of Egyptian President Mohamed Morsi. Brotherhood leaders may have met in London shortly afterward to discuss their response to Morsi, and by extension the Brotherhood, being forced from power, the Times report said.
British intelligence will investigate whether any plotted violent attacks from that new base, the reports say, including a recent attack on an Egyptian bus that killed three people.
Britain's ambassador to Saudi Arabia will put the report together, focusing on the Brotherhood's "philosophy and values and alleged connections with extremism and violence." His findings are due this summer and, the BBC reports, will be made public.
Previous investigations by U.S. law enforcement uncovered a sophisticated network of Muslim Brotherhood front groups operating in America. Many of them continue to enjoy significant public profiles, although they work hard to bury their histories and deny their Brotherhood links.