Police have arrested six Jewish extremists in the brutal murder of Palestinian teen Muhammad Abu Khdeir, an Israeli security official said Sunday. Mohammed Abu Khudair is seen in this undated family handout picture (photo credit: REUTERS) Abbas speaks during meeting with UN envoy (photo credit: REUTERS) Muhammad Abu Khdeir (photo credit: Courtesy) Palestinians look on as they stand in front of a poster depicting 16-year-old Mohammed Abu Khudair during his funeral in Shuafat, an Arab suburb of Jerusalem July 4, 2014. (photo credit: REUTERS) Security footage showing faces of two of the alleged kidnappers, murderers of teen Abu Kdheir (photo credit: PALESTINIAN MEDIA) Palestinians carry the body of Mohammed Abu Khdeir during his funeral in Shuafat (photo credit: REUTERS) Palestinians carry the body of Mohammed Abu Khdeir during his funeral in Shuafat (photo credit: REUTERS) Although details of the arrest remain unknown, the official, who spoke under the condition of anonymity due to a gag order, confirmed the killing was likely nationalistically motivated.The unidentified suspects remain in police custody amid ongoing rioting in east Jerusalem.Palestinians have claimed that the murder was carried out by Jews in revenge for the kidnap and murder of three Israeli teens last month.Amid calls for a third intifada, thousands of Palestinians gathered in east Jerusalem on Friday during a violent and highly charged funeral procession for the murdered teen. An autopsy report released Saturday revealed that the teen was burned alive.Draped in a Palestinian flag, Abu Khdeir's 16-year-old body was carried through his neighborhood of Shuafat under a sweltering sun to a local cemetery, as firecrackers, gunshots, and calls for vengeance pierced the air.“With our blood and our spirit we shall sacrifice for the martyr!” chanted mourners, as they waved Palestinian flags during the procession.Stones thrown at police by masked Palestinian youths were met by tear gas and stun grenades.PA President Mahmoud Abbas says Abu Khdeir was the victim of Jewish extremists incensed at the discovery last week of the remains of Gil-Ad Shaer, 16, Eyal Yifrah, 19, and Naftali Fraenkel, 16, all of whom were buried Tuesday.