The parents of a Chechen man who was fatally shot while being questioned in Florida about a Boston Marathon bombing suspect in 2013 have sued four law enforcement agents for wrongful death.

The lawsuit was filed Monday in federal court in Orlando by the estate of Ibragim Todashev and Todashev’s parents against two Massachusetts state troopers, an FBI agent and an Orlando police officer who was working under the FBI’s supervision. Todashev’s estate is being represented by an official with the Council of American-Islamic Relations Florida.