Officials at Oxford university had to close a party down when a student turned up with his home made flame thrower.
Inigo Lapwood, 20, said he made the weapon using parts from a nail gun and diesel engine glow plug and a canister of butane gas.
More top news
Nazanin Zaghari-Ratcliffe's five-year jail sentence is confirmed despite her husband's campaign to bring her home.
It comes after a fire at the Grandy Industrial Estate this morning - the second in a matter of days.
Philippa has Sunday's weather for the east