Fundamentalist groups operating in Pakistan and parts of Southeast and Central Asia were among those, who pose a "significant threat" to America's security, CIA Director Peter Goss has said. Testifying before the Senate Armed Services Committee, the intelligence agency's chief said Al-Qaeda was making efforts to circumvent security arrangements to strike and did not rule out use of chemical or biological weapons by the terror outfit. "Our reporting indicates Al-Qaeda is intent on finding ways to circumvent US security enhancements to strike Americans and the Homeland ... That Al-Qaeda or another group wants to use chemical, biological, radiological and/or nuclear weapons cannot be ignored," he said during the weekend. "The threat from a broader Sunni jihadist movement is broad. We have witnessed this in Madrid, Bali, the Philippines, Saudi Arabia and many other places. It is worth noting that other groups in Pakistan, Southeast Asia, central Asia, East Africa and Europe also pose a significant threat to our security," he added.The war on terrorism, Goss said, has presented the intelligence community with new challenges. "We are facing small groups of terrorists and extremists rather than standing armies. They operate out of homes and caves rather than military bases and Government entities... and only a few individuals may know the complete plan of a given terrorist plot," he said.