New Delhi: The Central Bureau of Investigation (CBI) has arrested of GAIL (India) Limited's Executive Director (Projects) KB Singh in connection with the alleged Rs 50 lakh bribery case in which money changed hands to favour some contractors in the gas pipeline projects, officials said Tuesday.

Along with Singh, four others have also been arrested, including Director of Vadodara-based Advance Infrastructures Surender Kumar, they said.

It is alleged that the bribe was paid for favouring the company in two GAIL pipeline projects Srikakulam to Angul and Vijaypur to Auraiya. The CBI had received input about the bribe exchange following which, it launched an operation on Monday and made the arrests, they said.

Searches are going on at several locations in Delhi, Noida, and Visakhapatnam in connection with the case, they said.

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