A pipe bomb was found under a bridge from which Bharatiya Janata Party (BJP) leader L.K. Advani' anti-corruption yatra was supposed to pass in Tamil Nadu near Madurai on Friday morning, police said.
The second leg of the yatra began from Madurai Friday morning.
"Some people found the bomb under the bridge on which Advani was supposed to travel and informed the police," a police officer said.
"We cordoned off the area and recovered the bomb," he said.
The bomb was found in Alam Patti near Madurai, around 450 from Chennai.