In an earlier incident on the same day, assailants set up a roadblock and proceeded to throw rocks at an ambulance transporting wounded Syrian nationals but failed to stop the vehicle.
According to the newspaper, on Tuesday night Northern District police carried out "a wave of arrests." The exact number of those detained was not specified.
According to local media, Israeli Druze communities are enraged by news of jihadist militants in Syria killing local Druze people. Many Druze leaders reportedly accuse the government of Israel of supporting the militants by providing their fighters with medical assistance.
Syria has been mired in civil war since 2011, as the government is battling against several insurgent groups, including Islamic State jihadists. Israel has been treating wounded Syrian nationals since March 2011.
According to Israeli authorities, the health care is a form of humanitarian assistance. Since the start of the civil war in Syria, Israel is estimated to have treated some 1,600 Syrians.