The family of Saif Musallet, a 20-year-old U.S. citizen and Tampa resident killed during a trip to the West Bank, joined Islamic leaders on Monday to call for "urgent U.S. government action" in the aftermath of his death.

A 20-year-old American was allegedly beaten to death by Israeli settlers while visiting family in the West Bank, according to Palestinian health officials and his family.

The liberal Israel lobby J Street also called for a US-led investigation into the death. The family of a 20-year-old Palestinian-American man they say was beaten to death Friday by Israeli settlers in the West Bank has called on the U.S. State Department to investigate the incident.