Quazi Nafis, in an undated photo / CBS News
DHAKA, Bangladesh Police say they are investigating whether a Bangladeshi man charged with trying to blow up the Federal Reserve building in New York had connections with radical groups in Bangladesh.
Dhaka Metropolitan Police official Monirul Islam says detectives on Saturday will visit North South University in Dhaka where Quazi Mohammad Rezwanul Ahsan Nafis studied before going to the United States. They will interview teachers, classmates and school officials.
Detectives have already visited Nafis' village, where they found no evidence of connections with radical groups.
Nafis was arrested Wednesday in an FBI sting operation. A criminal complaint says he made several attempts to blow up a fake 1,000-pound car bomb near the Federal Reserve.
Home Minister Mohiuddin Khan Alamgir has pledged that Bangladesh will assist the United States in investigating Nafis.