In May 2003, the FRPI reportedly had 9,000 combatants and be closely linked to the FNI.[5] By 2015, this number was estimated to have declined to 1,000.[2] In February 2003, the FRPI participated in the Bogoro massacre with the FNI. The FRPI joined the UPDF in a successful March 2003 offensive against the UPC and jointly occupied the town[which?] with the FNI in May 2003.[5] In 2006, the Congolese government signed a ceasefire with the FRPI and other rebel groups active in the northeast of the country. Though 15,000 FRPI soldiers were demobilized as part of the peace process and many commanders integrated into the FARDC, violent FRPI activity returned in 2008 with attacks by residual FRPI forces against Ituri villages and FARDC camps.[3][6] In September 2008, FRPI commanders splintered off to form the Popular Front for Justice in Congo (FPJC).[6][7] Whereas its ally the FNI largely transformed into a political party in 2005, the FPRI has resisted disarmament and demobilization campaigns.