 A subsequent congressional investigation found "strong circumstantial evidence" of collusion between the Armed Forces of the Philippines and the Abu Sayyaf.It recommended that Jovenal Narcise, commander of the 103rd Infantry Brigade, the Philippine Army unit that responded to the Abu Sayyaf attack, be subjected to a court martial.Narcise and other military officers, however, were cleared of any liability for the Abu Sayyaf's escape during a pre-trial investigation.