Violence erupted on Israel's borders with Syria, Lebanon and Gaza on Sunday, leaving at least eight dead and dozens wounded, as Palestinians marked what they term "the catastrophe" of Israel's founding in 1948.
Israeli troops shot at protesters in three separate locations to prevent crowds from crossing Israeli frontier lines in the deadliest such confrontation in years.
Israeli and Syrian media reports said Israeli gunfire killed four people after dozens of Palestinian refugees infiltrated the Israeli-occupied Golan Heights from Syria, along a disputed border that has been quiet for decades.
Witnesses on the nearby Lebanese frontier said four Palestinians were killed after Israeli forces fired at rock-throwing protesters to prevent them from crossing the border.
The Lebanese army had also earlier fired in the air in an attempt to hold back the crowds.