Following a raid on suspected al-Qaeda operatives in Dublin, Ireland, on December 21, 1999 (see December 21, 1999), FBI investigators begin monitoring the al-Qaeda cell there. The cell is believed to specialize in providing travel and identity documents for others committing violent acts. It will later be reported that “further investigation led to the tracing of telephone calls between Dublin and the Yemen in the period before al-Qaeda launched” its attack on the USS Cole (see October 12, 2000). [Irish Times, 7/31/2002] Additional details such as what was said in these calls have not been reported. The calls to Yemen may well have been to a Yemeni al-Qaeda communications hub that was under US surveillance since at least 1998 (see Late August 1998).