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STORY: "I welcome what the Israeli foreign minister said yesterday to me about a full, urgent and transparent inquiry into how this dreadful event was allowed to happen. And we want to see that happen very, very quickly," Cameron said.

Prime Minister Benjamin Netanyahu said on Tuesday (April 2) Israel mistakenly killed seven people working for the aid charity World Central Kitchen in a Gaza airstrike, and the U.S. and other allies called for explanations amid widespread condemnation.

Israel's military voiced "sincere sorrow" over the incident, which ratcheted up international pressure for steps to ease the disastrous humanitarian situation in Gaza nearly six months into Israel's siege and invasion of the Palestinian enclave.

The strike on the World Central Kitchen convoy killed citizens of Australia, Britain and Poland as well as Palestinians and a dual citizen of the United States and Canada.

WCK, which was founded by celebrity chef Jose Andres, said its staff were traveling in two armoured cars emblazoned with the charity's logo and another vehicle, and had coordinated their movements with the Israeli military.