Singh is an accused in case number 4/12 registered at the EOU police station in the state capital. He is accused of threatening, intimidating and extorting money from Central Public Works Department (CPWD) contractors who bid for the construction of Sashastra Seema Bal (SSB) camp at Narkatiaganj in West Champaran district on the Indo-Nepal border, EOU Inspector General Praveen Vashista said.
"We were investigating the case for the last several months and gathered sufficient evidence of his involvement. An arrest warrant was issued by the court and we executed it. Other accused in the case will be nabbed in the coming days," said Vashista.
The gang operated with impunity till last year when the Special Task Force (STF) of Bihar Police arrested both of them from Uttar Pradesh. The duo face more than 50 charges of murder and other serious crimes.
Sources said the LJP leader is a relative of former MP Surajbhan Singh. He and his wife had unsuccessfully contested Bihar assembly polls in 2005 and 2010, respectively.