Relatives of a Tampa man who was killed last week in a fight with Israeli settlers in the West Bank are calling on the U.S. State Department to investigate. State of play: The settlers beat to death Sayfollah Musallet,

U.S. Ambassador to Israel Mike Huckabee said on Tuesday he has asked Israel to "aggressively" investigate the death of an American citizen who was beaten to death in the West Bank.

Israeli settlers killed a 20-year-old Palestinian-American man in the West Bank, according to the Palestinian Ministry of Health and an eyewitness, as settler violence against Palestinians ramps up in the occupied territory.