At least one person was killed and four others were wounded in a stabbing attack at a bus station in the city of Haifa.
The Israeli ambulance service disclosed this on Monday in what police described as a terrorist attack.
A police spokesperson said that security guards shot and killed the assailant.
It was not immediately clear whether the man killed had been stabbed by the assailant or shot by the guards.
However, police stated that the assailant was an Israeli citizen from a nearby Arab Druze town who had returned from abroad in May, adding that the attack was still under investigation.
Meanwhile, the Palestinian militant group Hamas praised the attack but did not claim responsibility.