Four people have been killed by lightning strikes in Kaliganj upazila and in Sreepur of Gazipur on Monday.A thunderbolt struck Mukund Das, 50, Sudhon Das, 30, son of Prem Das, and Nirab Das, 50, when they were guarding a fish enclosure, leaving them dead on the spot at noon, said Mahabub Alam Faruk, Chairman of Jamalpur union.On information, police recovered the bodies and sent those to a hospital morgue, reports UNB.Meanwhile, Innachh Ali, a farmer of Sreepur, was killed as a thunderbolt struck him while he was returning home at about 3:30pm.