Jack Teixeira: What we know about Pentagon leaks suspect

Friends of 21-year-old Jack Douglas Teixeira, the man accused of leaking classified US intelligence files, say he is not a whistleblower.

So why would a relatively junior airman with no clear motivation allegedly share highly sensitive documents online? The files, which number in the dozens, included confidential information about the war in Ukraine and other national security issues.

FBI investigators will no doubt be working to establish a potential motive.

Mr Teixeira's family has a history of military service, and friends say he has long wanted to join the military, raising further questions about why the suspect would potentially endanger US national security by leaking the files.

His stepfather retired after 34 years of military service, while his mother previously worked for non-profit organisations focused on veterans, according to LinkedIn and public records cited by US media outlets. His mother posted photos of the family every year for Veterans Day.

The family live in North Dighton, Massachusetts, and Mr Teixeira graduated from high school there in 2020. He was arrested outside the family's rural home by heavily armed FBI agents on Thursday.

Neighbours described him as being "big into video games", but said he was a "good kid, not a troublemaker". One said "he had a good head on his shoulders [and] wanted to join the military".