In a statement, ministry spokesman Ashraf al-Qidra said a third Palestinian was seriously injured in the blast that took place in Gaza City.

The cause of the blast remains unknown.

The explosion came hours after Palestinian resistance factions and Israel reached an Egyptian-sponsored cease-fire deal in the Gaza Strip.

Meanwhile, UN peace envoy Nikolay Mladenov arrived in the Gaza Strip on Sunday amid tension in the Palestinian territory, according to a local Palestinian official.

Mladenov arrived in the Palestinian territory through the Erez crossing, the official, who works at the terminal, said on condition of anonymity because he was unauthorized to speak to media.

The envoy’s visit came hours after Palestinian resistance factions and Israel reached an Egyptian-sponsored cease-fire deal to ease tension in the seaside enclave

On Saturday, two Palestinians were martyred and dozens injured in Israeli airstrikes in the seaside enclave, which the Israeli occupation forces said were in response to a volley of rockets fired from the strip into southern Israel.

Since March, more than 130 people have been martyred and thousands more injured by Israeli army fire during Palestinian protests against the decades-long Israeli occupation and 11-year blockade on the Strip.