The head of the US Federal Bureau of Investigation arrived in Athens yesterday with an FBI delegation that will discuss security at the 2004 Olympics with Greek officials today. Robert Mueller is also to present awards to top police and judicial officials who headed the operation to break the November 17 terrorist group, which led to the arrest in 2002 and early this year of 20 suspected group members. US nationals were among the prime targets of the far left-wing group, which killed 23 people between 1975 and 2000. Talks with Public Order Minister Giorgos Floridis and police chief Fotis Nassiakos will also focus on tackling international terrorism, organized crime, drug smuggling and illegal immigration. Meanwhile, the head of a US Olympic Committee delegation visiting Athens to discuss security arrangements said yesterday that some 100 agents escorting American athletes during the Games would not bear arms, according to The Associated Press. Greece has said it will not allow foreign security agents to bring their weapons to Athens.