"Bastar SP Mayank Shrivastava has been suspended while IG, Bastar range, Himanshu Gupta was shifted to Police headquarters" Secretary, Public Relations, Aman Singh told PTI.
Shrivastava has been attached to DGP office till further order and Gupta will now serve as IG, Crime Investigation Department (CID), Singh added.
Ajay Yadav will be new SP of Bastar district and Arun Deo Gautam IG, Bastar range, Singh added.
The state government has come under criticism for security lapses that had led to the incident, something acknowledged by Chief Minister Raman Singh.
Heavily-armed Maoists had on Saturday last ambushed a convoy of Congress leaders at Darbha, killing 27 people including PCC chief Patel, his son Dinesh, senior Congress leader Mahendra Karma and ex-MLA Uday Mudaliyar and injuring 37 others, including former Union minister V C Shukla.
The NIA has also begun probe into the incident.