Two mobile towers were damaged by a powerful bombs on Thursday, in two areas of Bihar.
The explosions, said to have been engineered by Maoists, took place ahead of two election rallies to be addressed by BJP prime ministerial candidate Narendra Modi.
Police confirmed that about 100 Maoists had gathered to blow up the two mobile towers in Manjhauli and Dumaria Bazar villages in Gaya District late last night.
Modi is scheduled to address two election rallies in Maoist-hit Sasaram and Gaya on Thursday afternoon.