Story highlights The terror plot targeted sites in west London

22-year-old ringleader Tarik Hassane pledged allegiance to ISIS in 2014, authorities said

Police uncovered firearms and ISIS propaganda material including explicit images of beheadings

(CNN) Two university students have been convicted of plotting a terror attack on the streets of London.

The terror cell's 22-year-old ringleader, Tarik Hassane, and 21-year-old Suhaib Majeed, were convicted Wednesday of conspiring to commit a terrorist murder in support of ISIS.

The foiled attack targeted the Shepherds Bush Police Station and the Parachute Regiment Territorial Army Center in White City, in west London.

"They were planning to target police or military personnel before escaping on a moped, but members of the public also could have been victims had their plans not been thwarted," Commander Dean Haydon, head of the Metropolitan Police Counter Terrorism Command, said.

'Enormous and spectacular attacks'