The Central Bureau of Investigation has arrested four persons in Gaya, Bihar, in connection with the murder of National Highway Authority of India official Satyendra Dubey.

Babloo Mehtar, Uday Mallah, Mantoo Paswan and Tutoo Paswan were produced before a designated court in Patna, which remanded them to CBI custody, agency sources said.

The four were being brought to the CBI headquarters in New Delhi for a detailed interrogation, they said.

A CBI team headed by Deputy Inspector General Lok Nath Bera is camping at Gaya.

The investigation indicates that the murder took place during a roadside robbery.