In more trouble for edtech giant Byju's, the Enforcement Directorate has barred its founder Byju Raveendran from travelling outside the country. The central agency has issued a lookout circular against the 43-year-old entrepreneur. Earlier, the ED had issued a lookout circular 'on intimation' meaning that immigration authorities would inform officials concerned about any foreign trip by Raveendran, but now he can be stopped from leaving the country.