Relatives of the late former Libyan leader Muammar Gaddafi will sue NATO in the International Military Court in the Hague on “war crime” charges, France-based Europe1 radio station quoted Gaddafi’s family lawyer as saying.

“They [relatives of the late dictator] will file a suit on war crime charges,” Marcel Ceccaldi said. “NATO helicopters opened fire on [Gaddafi’s] convoy…This convoy did not pose any threat to civilians. It was an operation to eliminate the Libyan leader, planned by the North Atlantic alliance.”

The lawyer also criticized the decision to display Gaddafi’s corpse at a shopping center in Misrata for four days, RIA Novosti reported.

Gaddafi, who ruled Libya for 42 years, died shortly after being captured alive by National Council fighters near his hometown of Sirte last week. The UN human rights office, as well as Russia and the United States, have called for a probe into the deposed Libyan leader’s extrajudicial killing.

On Tuesday Gaddafi was buried at a secret location in the Libyan desert.