Ahmedabad crime branch's Deputy Commissioner of Police (DCP) Abhay Chudasama, 44, a 1999 batch IPS officer, was one of the conspirators who abducted Sohrabuddin and his wife Kauserbi, the CBI said.

"Chudasama has been concertedly influencing important witnesses to conceal true facts and to give false statements to the CBI hence he has been arrested today (Wednesday) on the oral testimony of witnesses and material objects," said the CBI, whose probe is led by Deputy Inspector General (DIG) P. Kandaswamy.