LONDON, June 4 (Xinhua) -- A teenager was on Monday found guilty of plotting a terror attack on the British Museum in London.

The convict, S. Boular, 18, was found with the country's first all-woman cell. She has become Britain's convicted female Islamic State terrorist, local media said.

A jury at the Old Bailey found her guilty of two offences of preparation of terrorism acts.

She was also found guilty over an earlier attempt to travel to Syria for terrorism.