Hamas, the Palestinian terrorist group, is claiming responsibility for a shooting Tuesday that left four Israelis dead.
Two men and two women died in the attack near the city of Hebron. One of the women was pregnant.
The shooting comes as Middle East peace talks are about to begin this week in Washington, DC.
Knesset minister, Akiva Eldad, is now calling for those talks to be suspended.
Security forces have been on high alert because of fears that Hamas would try to sabotage the talks.
"This is a warning sign to those who believe that 'gestures' will solve the conflict. The only way to deal with terror is with a heavy hand, not with surrender," Tzipi Hotovely, a Knesset member from Israeli Prime Minister Benjamin Netanyahu's Likud party, said.
Sources: IsraelNationalNews, Associated Press, Ha'aretz