UPDATE:The Resorts World Manila gunman has been identified as Filipino Jessie Carlos, 43, separated, and a former tax specialist of the Department of Finance with known address at 1663 Felix Huertas corner San Lazaro St., Sta. Cruz, Manila.
NCRPO chief Director Oscar Albayalde, who ruled out speculation that the attack was an act of terrorism, said that Carlos had an outstanding debt of P4 million and was addicted to gambling. Carlos was described as a "high roller" and had been banned by PAGCOR from gambling in at least 4 casinos in Metro Manila.
Presented during the presscon were Carlos' parents and wife, who expressed their apologies and sympathy to families of the casualties of the attack.
Carlos, according to a 2014 article published in The Philippine Star, was found guilty of grave misconduct and neglect of duty for not declaring his house and lot in Manila in his SALNs from 2003 to 2006, his Toyota Innova SUV in his 2007 SALN, and his business interest in his 2010 SALN.
Following the decision, Carlos’ civil service eligibility was canceled, his retirement benefits forfeited, and he was perpetually disqualified ffrom reemployment in the government.
http://www.philstar.com/headlines/2014/05/06/1319846/dof-tax-specialist-fired-not-declaring-assets?nomobile=1
It's clear that this man is full of debts. No he is not related to ISIS. ISIS can claimed whatever they want to make a hype.