Police were placed on the highest alert on Monday, a day after two border police officers were killed. The two assailants, who appear to be connected to the Islamic State, were shot and killed by two undercover officers who arrived afterward to investigate the shooting.
"We condemn today's terrorist attack in Hadera, Israel," U.S. Secretary of State Antony Blinken tweeted on Sunday. "Such senseless acts of violence and murder have no place in society. We stand with our Israeli partners and send our condolences to the families of the victims."
The two gunmen were identified as Arab Israeli citizens, according to officials. At least one assailant was identified by officials as attempting to enter ISIS, according to Haaretz. Israeli officials are investigating if the shooting is connected to the ISIS sympathizer who shot and killed four people in southern Israel last week. The officials are also investigating if the two gunmen had any co-conspirators
ISIS claimed credit for the shooting on Telegram and Facebook on Monday, according to the Jerusalem Post. Israeli security forces also arrested several members of the assailants' families overnight over suspicions that they had been aware of the planned attack.
"Tonight's heinous terrorist attack is an attempt by violent extremists to intimidate and damage the fabric of life here," Israeli Foreign Minister Yair Lapid tweeted on Sunday.
The shooting occurred as foreign ministers from Israel and its neighbors meet for a historic summit with Blinken to discuss relations and Iran. A senior Israeli foreign minister told reporters that the Monday summit would continue as planned, according to Axios.