Four people were injured in a knife attack in Tel Aviv on Tuesday, Israel’s emergency services said.

Ichilov Hospital said it was treating three victims, one of whom was “in serious condition with a stab wound to the neck.” Police said the attacker, a 28-year-old foreigner, was shot dead at the scene.

Israel’s intelligence agency, the Shin Bet, said it was investigating after the decision was made to allow the man entry. The man reportedly holds Moroccan citizenship and permanent residency in the United States.

It was the second stabbing in Tel Aviv in four days, after a person was attacked and shot dead by an armed civilian on Saturday.

Tuesday’s attack took place on Nahalat Binyamin Street, known for its restaurants and nightlife, and on nearby Gruzenberg Street, where the attacker stabbed another person and was shot dead .

Israeli media reported that a U.S. residence permit and border control ticket were found on the attacker’s body.

He entered Israel on January 18 on a tourist visa.

Israeli Interior Minister Moshe Abel said border and immigration forces objected to the man’s entry into Israel while at Ben Gurion Airport, but Shin Bet security approved his entry.

He added: “I call on Shin Bet head Ronen Bar to investigate this serious incident and learn from it as soon as possible.”

The Shin Bet responded: “Upon entering Israel, the individual underwent a security assessment, including interviews and additional checks, which concluded that there were no grounds to deny him entry for security reasons. The incident will be investigated.” “

Hamas did not claim responsibility for the attack but praised it in a statement.