The man accused of trying to bomb a US airliner was placed on a UK watch list after he was refused a student visa, Britain said Monday.
Home Secretary Alan Johnson added that police and security services are looking at whether Umar Farouk Abdulmutallab was radicalized in Britain.
Abdulmutallab received a degree in engineering and business finance from University College London last year and later applied to re-enter Britain to study at another institution. Johnson said Monday he was refused entry because officials suspected the school was not genuine and they then put his name on the list.
Johnson said that people on the list can transit through the UK but cannot enter the country.