As reported by The Pakistani Newspaper:

ISLAMABAD, Jan 28 (AFP) A US diplomat, Keith Ryan, was found dead at his home in Islamabad Monday after apparently shooting himself in the head, police said. Investigators said the man, believed to be in his 30s, was discovered with a bullet wound to the head. US embassy officials were not immediately available for comment.

“He was found dead at his home. A bullet hit his head,” an investigation official told AFP. “Apparently he committed suicide, but we are investigating from all possible angles.” Officials from the US embassy and medical teams arrived at the scene before police were alerted, the investigator said. A senior security official also said that a US diplomat was found dead at his home in Islamabad after a suspected suicide.