Massive manhunt underway for escaped inmate known as "The Fly" after officers killed in prison van attack in France

A massive manhunt was underway in France on Wednesday for armed assailants who ambushed a prison convoy, killing two prison officers, seriously injuring three others and springing the inmate they were escorting. The prime minister vowed the gang would be caught, saying, "They will pay."

"We are tracking you, we will find you and we will punish you," Prime Minister Gabriel Attal said in parliament, to applause from lawmakers. "They will pay for what they have done."

French Interior Minister Gerald Darmanin said "unprecedented" efforts were being deployed. Hundreds of officers were mobilized in the search for the escaped convict, Mohamed Amra, and the assailants who laid in wait for the prison van transporting him, ramming a car into it before opening fire on Tuesday.