An eyewitness has told the BBC that he tried to tackle a fire at a vape shop next to Glasgow Central station but had to abandon the attempt after a series of explosions. The fire at the shop in Union Street broke out at about 15:45 on Sunday. Later the entire building was engulfed in an inferno that caused its partial collapse. Lamin Kongira told BBC Scotland News he had been walking past when a shopkeeper ran out saying "fire, fire". "I ran into the shop and I saw a small fire under the counter," he said. Lamin said there was an adapter charging system - full of chargers - and that's where the fire was. Lamin then dashed next door to the Subway sandwich shop to get help. He said he came back with a fire extinguisher and tried to fight the fire. But two explosions in the vape shop meant that he had to turn around and shout at passers-by to "get back". Lamin said he thought it was the second explosion that spread the fire to other parts of the building.…