Jamui: The 15 people abducted by Maoists in Bihar's Jamui district on Monday are yet to be traced even as securitymen intensified operations to rescue them.

"There is still no trace of the kidnapped persons. The security personnel have intensified the operations to free them from the clutches of the Maoists," Jamui Superintendent of Police R N Singh said.

Maoists kidnapped the 15 -- eight labourers, four employees of a private construction company and three villagers -- from Balthar Ghat.

Late on Monday night, over 50 ultras stormed into the office of a private firm engaged by Bihar State Bridge Corporation for construction of a bridge over Bharnar River and took them away at gun point to a forest bordering Giridih district of Jharkhand.