Mundos was found at the home of a relative in a slum near the international airport. The U.S. offered a reward up to $500,000 for information leading to the location, capture, or conviction of Mundos after he escaped in 2007 while on trial for murder in the Philippines.
He is one of the top commanders of the terrorist group Abu Sayyaf, which is based in the Philippines. The group is believed to be responsible for a series of attacks on U.S. troops and Filipinos in the region since its formation in the early 1990s.
After his escape, he worked as a "fundraiser, bomb maker, and instructor" for the group. He also arranged for Abu Sayyaf to receive funds for terrorist operations from al-Qaida.
"Mundos confessed to having arranged the transfer of funds from al-Qaida to Abu Sayyaf group leader Khadaffy Janjalani to be used in bombings and other criminal acts throughout the [Philippine] island of Mindanao," said the U.S. State Department in the statement offering the reward.