The team of CBI officials including the investigating officer will do spot verification of the facilities of public sector undertaking and may question some senior officials, CBI sources said.
The team will also visit two more locations where the facilities of BEML are located, they said.
The agency has registered a case naming Vectra Chairman Ravinder Rishi and unnamed officials of the defence ministry, Army and BEML on March 30 for alleged criminal conspiracy, cheating and also under relevant sections of the Prevention of Corruption Act.
The agency is probing alleged irregularities in assigning of supply from Czechoslovakia-based Tatra, with which the agreement was originally signed in 1986, to the Tatra-Sipox UK owned by Rishi in 1997 showing it as an original equipment manufacturer and the fully-owned subsidiary of Czech company, which was against the provisions of Defence Procurement Procedure, the sources said.
The allegations of any wrongdoing have been refuted by Rishi and BEML Chairman V R S Natarajan.