Polish Deputy Foreign Minister Andrzej Szejna says he had demanded a criminal inquiry by Israel after what it called the "murder" of seven food charity workers, including a Polish citizen, in a Gaza airstrike this week. "We want [Polish] prosecutors to be added and implicated in the explanations and in the entire criminal and disciplinary procedure for the soldiers responsible for this... murder," Szejna adds after Israel's Warsaw envoy was summoned and issued a formal protest over the strike on the World Central Kitchen workers. SOUNDBITE