The CBI has arrested NHAI general manager Purushottam Lal Choudhary, posted in Madhya Pradesh's Chattarpur, in a Rs 10-lakh bribery case, officials said on Sunday.

The six other other accused in the case, including an NHAI consultant Sharad Verma and his resident engineer Prem Kumar Sinha, and four employees of accused company PNC Infratech -- Satyanarayana Anguluri, Brijesh Mishra, Anil Jain and Shubham Jain --, were arrested on Saturday evening, they said.