The Justice Department says Mahfuz Huq was arrested Thursday. Little is known about how Huq spent the past 20 years, and authorities in the United States and in India are providing few details about his arrest or his activities.

Authorities said Huq, whose family is from Bangladesh, fled the US in 1989. The case has been featured on the television programs "Unsolved Mysteries" and "America's Most Wanted." The Justice Department says the United States has 60 days from the date of arrest to submit an extradition request.