(Anwar al-Awlaki, a U.S.-born cleric linked to al Qaeda's Yemen-based wing, gives a religious lecture in an unknown location in this still image taken from video released by Intelwire.com on September 30, 2011/Intelwire.com)

Yemen’s Defence Ministry said on Friday that Anwar al-Awlaki, a U.S.-born Muslim preacher linked to al Qaeda’s Yemen-based wing, had been killed, in what a security official said was an air strike. Awlaki had been implicated in a botched attempt by al Qaeda in the Arabian Peninsula (AQAP) to bomb a U.S.-bound plane in 2009 and had contacts with a U.S. Army psychiatrist who killed 13 people at a U.S. military base the same year.

U.S. authorities have branded him a “global terrorist” but Sanaa had previously appeared reluctant to act against him. It was not immediately clear if Awlaki had been killed in a Yemeni air raid or a U.S. drone strike. A U.S. drone aircraft targeted but missed him in May. Yemeni officials had previously reported that Awlaki had been killed in late 2009.

Here is some background about Awlaki:

LIFE HISTORY

* Born in New Mexico in the United States in 1971, Awlaki is a U.S. citizen. He graduated in civil engineering from Colorado State University and holds a master’s degree in educational leadership from San Diego State University.

* Awlaki’s family is well-known in Yemen. His father is a former agriculture minister, Nasser al-Awlaki.