Complex sentence: On February 2,2011, the CBI arrested Raja along with his aide, R. K. Chandolia, and Siddharth Behura, the former Telecom Secretary.
Split into simpler sentences: On February 2,2011, the CBI arrested Raja. The CBI also arrested R. K. Chandolia, Raja's personal aide, and Siddharth Behura, the former Telecom Secretary.