Six engineers of the Guwahati Municipal Corporation (GMC), a retired Assam Civil Service (ACS) officer, and a director of a private firm were among the eight people arrested on Friday for alleged irregularities in the execution of de-siltation work in the city.

The arrests were made after the Chief Minister’s Special Vigilance Cell filed a police complaint over the matter following an inquiry conducted by it.

The arrested Assam Civil Service (ACS) officer was serving as the Officer on Special Duty (OSD) when the alleged corruption occurred.

The private firm allegedly submitted bills for crores of rupees with forged weighbridge slips and withdrew government funds. The bills were submitted to GMC, indicating the supply of vehicles and machinery at an inflated rate.

The staff of GMC allegedly criminally conspired with the firm, and did not implement de-siltation works as per terms and conditions laid down in the tender documents, police said.