<p>WASHINGTON — A Muslim activist whose Virginia home was searched as part of a federal investigation of terrorist financing was arrested shortly after arriving back in the United States, law enforcement officials said.</p>
<p>Abdul Rahman al-Amoudi (search) was taken into custody at Dulles International Airport on Sunday after a flight from London, officials said. The charges against al-Amoudi were expected to be unsealed following an initial court appearance Monday.</p>