The United Nations has condemned what it called an “unlawful air strike” by Israel on a refugee camp in the occupied West Bank that the Palestinian health ministry said killed 18 people the previous day, AFP reports.

“The strike is part of a highly concerning pattern of unlawful use of force by ISF (Israeli security forces) during military-like operations in the West Bank that have caused widespread harm to Palestinians and significant damage to buildings and infrastructure,” the UN’s rights office said in a statement.

“This incident is another clear example of ISF’s systematic resort to lethal force in the West Bank that is frequently unnecessary, disproportionate, and therefore unlawful,” the office said, as it called for an independent probe into the incident.

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