Charlie Kirk, the conservative activist and co-founder of Turning Point USA, was mourned Thursday by a forum representing families of people abducted in the Oct. 7, 2023, attacks on Israel after he was fatally shot while speaking at an event in Orem, Utah. Kirk, 31, a husband and father of two, was killed on Wednesday; authorities have launched a manhunt for a suspect who remains at large.

The Hostages and Missing Family Forum said in a social media statement that it mourned Kirk "with deep sorrow," praising him as a "powerful voice" who stood with Israel and supported the hostages and their families. "We are forever grateful for his unwavering solidarity," the forum said, adding that its "hearts are with his loved ones during this painful time."

Former hostages who have returned to Israel also issued statements expressing grief. Omer Shem Tov, who was released in February after more than 500 days in captivity, described Kirk as "one of the strongest and bravest voices for Israel" and said he had been murdered "just for speaking his truth." Noa Argamani, another person taken in the Oct. 7 attack and later rescued, posted on Instagram, "May his memory be a blessing."

Omer Shem Tov, a freed hostage, welcomed home in March 2025

The forum represents 48 people it says remain held by Hamas in the Gaza Strip. U.S. and Israeli assessments estimate that a smaller number of the captives are still alive; several outlets have reported roughly 20 may remain alive, though those figures have fluctuated through the course of months-long negotiations and fighting.

Kirk's death comes at a sensitive moment in talks aimed at securing the release of remaining hostages. Negotiations between Israel and Hamas have failed to produce major exchanges since an initial phase of an agreement ended in March, with only a handful of releases since then. One American captive, Edan Alexander, was freed in May. Hours before Kirk's killing, President Donald Trump met at the White House with former hostages and relatives of people still held in Gaza.

President Donald Trump meets with freed hostages and family members at the White House on Sept. 10, 2025

Tensions have been heightened by an Israeli strike in Doha, Qatar, earlier this week that targeted members of Hamas' leadership who were reportedly in the Qatari capital for talks related to hostage negotiations. The strike, which killed six people including a Qatari security official, drew international condemnation and prompted Qatar to call an emergency Arab-Islamic summit.

A senior Israeli source, speaking anonymously because of the sensitivity of the matter, questioned how hostage negotiations could proceed after the strikes, asking rhetorically who would take part in discussions if Hamas leaders were targeted while meeting to discuss a deal. Hamas said its leadership survived the attack, and Qatari officials have defended their role as a mediator. Doha's International Media Office rejected reporting that the incident had caused lasting friction between Qatar and the United States, calling the partnership "stronger than ever."

President Trump condemned the Doha strikes and said he was "very unhappy" about the incident, telling reporters that Israel had informed the U.S. military but that the notice came "too late to stop the attack." He said the decision had been made by Israeli Prime Minister Benjamin Netanyahu.

Israeli and U.S. officials have said negotiations are fragile and that diplomatic channels, including Qatar's mediation role and U.S. envoys, continue to be employed to seek further releases. Families of hostages and advocacy groups have repeatedly urged renewed diplomatic efforts amid continued fighting and limited prisoner exchanges.

Local law enforcement in Utah and federal authorities are investigating Kirk's killing and conducting a search for the suspect. Officials have not identified a motive and have urged anyone with information to come forward. The investigation is ongoing, and authorities have not released additional details about the suspect's description or possible movements.

Kirk had been a prominent conservative commentator and activist who gained national prominence through online platforms and youth outreach. His supporters and critics have both noted his vocal backing for Israel and for the families of those taken in the Oct. 7 attack. The killing has prompted responses across political and diplomatic lines, underscoring the broader geopolitical tensions surrounding the Gaza war and the stalled efforts to secure the release of hostages.

The manhunt and the continuing diplomatic efforts over the hostages are likely to remain focal points for U.S. and Israeli officials as investigations and negotiations proceed.