Hundreds of police fanned out across the Golan Heights on Monday in search of refugees who crossed over from Syria in some of the bloodiest violence in years along Israel's borders.
Twelve people were killed and around 300 others were injured on Sunday when Israeli troops fired on thousands of people along the Syrian and Lebanese borders, as well as in the Gaza Strip and the West Bank.
The protests came as Palestinians staged massive protests to mark the anniversary of Israel's founding in 1948, in an event known in Arabic as the "nakba" or "catastrophe."
The Israeli army and police remained on high alert with hundreds of police working through the night in the Golan Heights town of Majdal Shams to seek out any protesters who had not returned to Syria.