The Israeli military has advised residents in southern Lebanon and the Bekaa Valley to evacuate their homes immediately ahead of strikes on Hezbollah militia targets.
Relatives of slain Arab citizens and protest groups poured red dye into public fountains in several Israeli cities, a police spokesperson said in a statement.
The male perpetrator, who attacked people at a central bus station, was shot dead, the Magen David Adom rescue service said.
Israel claimed that Hamas is still holding 101 people.
Israeli media reported that the security agents violently dispersed some demonstrators.
