The CBI has summoned two senior Indian Police Service (IPS) officers for questioning in connection with the illegal cross-border cattle smuggling case.  The agency has asked IPS officer of DIG rank Kallol Ganai and SP rank officer Anshuman Saha to appear for questioning at the CBI office in Kolkata on Monday, sources said.

Ganai was earlier posted as DIG of Murshidabad Range, while Saha was posted as Additional SP of Murshidabad district where the alleged kingpin of the cattle trade Mohammad Enamul Haque operated.

The CBI had registered the case on September 21 last year against four persons, including some Border Security Force and Customs officers, who were allegedly bribed by the international cattle smugglers to facilitate the passage of bovines from their jurisdiction along the international border with Bangladesh.

The CBI had carried out searches at 34 locations across the country and arrested then BSF Commandant Satish Kumar and cattle smuggler Mohammad Enamul Haque last year. Haque is currently undergoing judicial custody.

The cattle were taken from India to Bangladesh after paying illegal gratification to BSF personnel manning the frontier there.

The accused BSF Commandant was posted in West Bengal between December 2015 and April 2017 and allegedly seized over 20,000 cows before they could be transported to Bangladesh, but the vehicles involved were not impounded, according to the FIR.

The CBI filed a chargesheet in the case in February this year against seven persons.

The agency has also issued a lookout notice against Bijay Mishra, brother of Trinamool Congress (TMC) leader Binay Mishra, who is a close confidant of party MP Abhishek Banerjee.

The agency may approach Interpol to get a Red Corner Notice (RCN) issued against Binay Mishra, who has not joined the probe till now, officials said.

Binay Mishra has also evaded summons so far in the case.