A CPI(M) activist was killed in a bomb attack while returning after exercising his franchise at Eroali village in Murshidabad district on Thursday, officials said.

"Kashinath Mondal (28), a CPI(M) worker, was returning home after casting his vote at Eroali village under Jangipur parliamentary constituency when he was attacked with bombs by some unidentified miscreants," SP BL Meena said, adding that he died on the spot.