Read the text and determine if the sentence is true (see options at the end):

South Korean President Roh Moo-hyun Thursday asked the Board of Audit and Inspection (BAI) to investigate questions arising about the Foreign Ministry's response to the kidnapping of a South Korean in Iraq who was later killed by Muslim militants, according to Yonhap.

Sentence: BAI investigated questions regarding a killing by South Korea
Options are: -Yes. -It's impossible to say. -No.