Israeli police: Palestinian stabs 4 in Tel Aviv

Israeli police officers stand guard at the scene of a stabbing attack in Tel Aviv, Israel. Sunday, April 23, 2017. Israeli police said Sunday, that an 18-year-old Palestinian stabbed and lightly wounded four people in Tel Aviv before being arrested. (AP Photo/Sebastian Scheiner) (The Associated Press)

Israeli police officers inspect the scene of a stabbing attack in Tel Aviv, Israel. Sunday, April 23, 2017. Israeli police said Sunday that an 18-year-old Palestinian stabbed and lightly wounded four people in Tel Aviv before being arrested. (AP Photo/Sebastian Scheiner) (The Associated Press)

Israeli police officers inspect the scene of a stabbing attack in Tel Aviv, Israel. Sunday, April 23, 2017. Israeli police say an 18-year-old Palestinian stabbed and lightly wounded four people in Tel Aviv before being arrested. (AP Photo/Sebastian Scheiner) (The Associated Press)

Israeli police say an 18-year-old Palestinian stabbed and lightly wounded four people in Tel Aviv before being arrested.

It remains unclear whether Sunday's attack was politically motivated.

Since September 2015, Palestinians have killed 42 Israelis, 2 visiting Americans and a British tourist in a wave of stabbing, shooting and car-ramming attacks.

In that same time, Israeli forces killed at least 244 Palestinians, most of them identified as attackers by Israeli authorities. The rest died in clashes with Israeli troops.

Israel says the violence is fueled by Palestinian incitement. Palestinians say it stems from anger over 50 years of occupation.