Iranian state television on Monday showed several suspects who supposedly confessed to killing five nuclear scientists in 2010.
Iranian officials reportedly have confessions from more than a dozen people they say are responsible for the deaths. The suspects included eight men and six women.
Iran claims the killers were trained at an Israeli military camp near Tel Aviv, and was part of an undercover operation by Israel and the West to destroy its nuclear program.
The television report also said that the assassins received their orders from Washington and London.
They did not identify the nationalities of the suspects.