The Enforcement Directorate, ED on Thursday registered a foreign exchange violation case against Swami Ramdev and his trusts. Official sources said in New Delhi today that the Directorate has found evidence of Ramdev and his trusts receiving financial aid from the USA, Britain and New Zealand.ED has formally registered a case under the provisions of Foreign Exchange Management ACT, FEMA. The Directorate is investigating other details of the companies through the registrar of the companies who have received foreign funding.Sources said Ramdev's investments and transactions are also being investigated to find out if they were carried in confirmity with guidelines laid by the Reserve Bank of India.Ramdev's close aide Bal Krishna is also in trouble with CBI registering a preliminary enquiry against him for allegedly using forged educational certificate to acquire Passport.