A British man could face a life sentence after being found guilty on Friday of plotting to kill US servicemen based in Britain.
Junead Ahmed Khan, 25, scouted US Air Force bases in eastern England using his job as a delivery driver as cover, a London court heard.
Police found online messages between Khan and an Islamic State (IS) fighter in Syria calling himself Abu Hussain, whom prosecutors claimed was in fact British-born Junead Hussain.
He was later killed in a US drone strike in the IS stronghold of Raqa in Syria.
Khan told Hussain that he wanted to carry out an attack similar to the one on British soldier Lee Rigby, who was hacked to death by an Islamist on a London street in 2013, the trial heard.
Following his arrest last July, detectives also found pictures of Khan posing with an IS-style black flag in his bedroom.
He was convicted of preparing for an act of terrorism and on a second charge of planning to travel to Syria to join IS.
“Through early detection and prosecution of these individuals, more serious crimes have been avoided which could have had devastating consequences in the UK or Syria,” said prosecutor Sue Hemming.
Khan’s 23-year-old uncle Shazib Ahmed Khan was also convicted of planning to join Islamic State militants in Syria.
The crime carries a maximum term of life imprisonment, with sentencing scheduled for May 13.