[5] In 2002, Jacquier was shot and wounded near the al Ain refugee camp outside Nablus in the northern West Bank while covering the Second Intifada for France 2.
[2] Jacquier reported on location from conflicts in Afghanistan, Algeria, Iraq, the Democratic Republic of the Congo, the wars in the former Yugoslavia, and, more recently, the Arab Spring from 2010 to 2012.
[2] Jacquier and cameraman, Christophe Kenck, were allowed to travel to the city of Homs, a stronghold of the opposition revolt, with the permission of the Syrian government.
[10][11] On 11 January 2012, Jacquier was interviewing local Syrian businesspeople and, at Mother Agnes' instigation, traveled to a Homs hospital,[11] when a pro-government demonstration organized nearby.
[12] His wife alleges that he was killed by the government, namely in a plot carried out by Assef Shawkat, Maher al-Assad, Ali Mamluk, and Michel Samaha.
[14] Other journalists, including Jacques Duplessy, Patrick Vallélian and Sid Ahmed Hammouche, who were present in Homs the day Gilles Jacquier was killed also think the Syrian regime was responsible for this death.
[19] Two Swiss journalists, Patrick Vallélian of L'Hebdo and Sid Ahmed Hammouche of La Liberté, who were also working in Homs, accused the Syrian government of being behind the attack that killed Jacquier.
[22] Arab League mission reports from Homs state that Jacquier was killed by mortar shells fired by opposition forces.
[26] Caroline Poiron, Jacquier's wife, published the book Attentat Express in June 2013 with Vallélian and Hammouche that accuses Syrian government intelligence of a planned killing of her husband.
[29] Jacquier and his colleague, Bertrand Coq, jointly won the 2003 audiovisual Albert Londres Prize for their work on the France 2 documentary, Naplouse, on the Second Intifada in the Palestinian Territories.