The UN peace envoy for the Middle East condemned continued attacks on civilians after Israeli airstrikes in Gaza’s Beit Lahiya killed dozens, Reuters reports.

“This follows weeks of intensified operations resulting in scores of civilian fatalities and near total lack of humanitarian aid reaching populations in the north,” said Tor Wennesland, the UN Coordinator for the Middle East Peace Process.

Israel’s military said it intensified attacks in northern Gaza in early October to prevent Hamas militants from regrouping.

A total of 87 people were killed or missing under the rubble after an Israeli attack on Beit Lahiya in northern Gaza, the enclave’s health ministry said.