‘‘The CBI has deliberately let off the rickshaw-puller who was the sole independent eyewitness to the crime,’’ the NGO said in an affidavit. ‘‘CBI has concluded this was a robbery, when it has been clearly stated by the local police that robbery-related murders are almost nil in that region... The CBI has also ignored the statement by the SP that the evidences indicate very clearly that this was not a robbery,’’ it added.