A trail of smoke is seen in the sky over Damascus, Syria, on Aug. 19, 2021. Israel launched missile strikes at some sites in Damascus and the central province of Homs on Thursday night, Syrian state TV reported. Photo:Xinhua

Israeli warplanes bombed Gaza Saturday after clashes between its troops and Palestinian protesters left dozens injured, including an Israeli border policeman and a 13-year-old Palestinian boy who were both critically wounded.

The Israeli military said it carried out air strikes against four weapons sites and that it had reinforced its Gaza division with additional troops.

The escalation came exactly three months since Israel and the enclave's Islamist rulers Hamas reached a truce following their deadliest fighting in years.

Israeli troops fired at Palestinian protesters who gathered near the Gaza border wall, the army and Palestinian witnesses said. A Palestinian gunman fired at Israeli troops through an opening in the wall and crowds of young protesters hurled explosives over the barrier and tried to scale it.

The Hamas-run Gaza health ministry said the injured included a 13-year-old boy left in a critical condition after being hit in the head.

"Forty-one civilians were wounded with various injuries," the ministry said, with Hamas saying "thousands" of protesters had taken part.

The Israel Border Police said a 21-year-old sniper in its undercover unit was critically wounded when he was shot by a Palestinian protester.

"His condition is critical and there is a risk to his life," it said of the wounded officer.

Israeli police commissioner Kobi Shabtai in a statement vowed the force would "continue to act firmly and with all our might against those who want to harm us."

Defense Minister Benny Gantz had warned that "these are definitely extremely serious events that will have a response."

AFP