Four persons were injured as stray incidents of violence were reported during the re-poll in Bihar's Chapra Lok Sabha constituency on Monday.

Till 1100 IST, the voter turnout was around 10-15% per cent, official sources said.

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The four were injured in a clash between two groups of villagers at booth number 41 at Marhaura. They were admitted to a hospital here, the sources said.

Unidentified persons exploded bombs at Munnapur and Barauna in Tariya police station area to intimidate the voters.

Rashtriya Janata Dal candidate and Railway Minister Laloo Prasad Yadav and Bharatiya Janata Party nominee Rajiv Pratap Rudy are locked in a direct fight in Chapra.

The Election Commission had on May 10 ordered a re-poll in Chapra after it's inquiry team confirmed large-scale rigging and booth capturing during the April 26 election in the constituency.