The details are in the Writ of Mandamus filed MArch 25, 1996 by Stephen Jones before the Tenth Circuit of appeals. I have a copy and so do most of the major new outlests in America (Fox-Rita Cosby,ABC,NBC,CBS) because I mailed it to them and discussed it with them in 1996. They all refused to cover the document even though it was intehir hands. It was even posted in part on the New American website at one time.
There were two witnesses who placed Nichols at a meeting with Abu Sayyaf members Edwin Angeles and Wali Khan. Khan is now in FBI custody and set up Abu Sayyaf for Bin LAden (bag man). Jones quotes his sources (CLear helped with this) about this meeting in his Writ of Manms.
I have heard reports going back for five years about McVeigh being in the Phillipines allegedly from CIA operatives working in the Phillipines on drug smuggling interdiction operations and monitoring the Communist and Abu Sayyaf terror activites there.
The Phillipines have been a known major training base for ALQaeda terrorists for many years, before the OKC bombing in 1995.