A military convoy carrying up to six nuclear warheads was spotted late last week moving through Scotland, which comes as war between Russia and Ukraine rages on and Russian President Vladimir Putin has put his nuclear forces on high alert following his invasion.

“The convoy was carrying up to six nuclear warheads only a mile south of Glasgow city centre, heading to Royal Naval Armaments Depot Coulport on Loch Long, according to NukeWatch, an organization that tracks and monitors the convoys that transport the UK’s Trident nuclear warheads,” the Daily Mail reported. “The nuclear-armed convoy passed over Erskine Bridge, heading up along the M6 motorway near Kendal, before being spotted on the M74 at Lesmahagow and arriving in Loch Long at approximately 11:30pm on Saturday.”