A terrorist convicted for masterminding the failed London 21/7 suicide bombing attack threw a tantrum when he came second in a prison sports day egg and spoon race.

Terrorist Manfo Kwaku Asiedu, 37, was competing at the high security Wakefield jail in northwestern England when Rangzieb Ahmed beat him to first place, 34.

Ahmed was jailed for masterminding attacks on the British capital, the report said.

Infuriated by Ahmed's narrow victory, Asiedu kicked his hard-boiled egg around the exercise yard before stamping on it, according to the newspaper.

"He lost by a whisker, but couldn't contain his anger, kicking the egg around the exercise yard in frustration then stamping on it. Both of them were very competitive and really wanted to win," the Courier Mail quoted a source at the prison as telling Sunday Mirror.

"These two convicted terrorists are supposed to be serving long sentences, not messing around like kids. It would have been hilarious if it wasn't so sickening," the source added. (ANI)