New Delhi, Oct 19 (IANS): A court here on Monday allowed Central Bureau of Investigation(CBI) to quiz, for five days, three accused in a case relating to supply of inferior-quality packaged drinking water in premium trains.

The Special CBI Judge Vinod Kumar allowed probe agency to interrogate railways officers Sandeep Silas and M.S. Chalia and businessman Shyam Bihari Agarwal till October 24.

The CBI on Saturday arrested them in the case relating to supply of inferior-quality packaged drinking water in premium trains, and on Sunday, all the three were sent to a day's police custody.

They were presented before the court on Monday after expiry of their one-day police custody.A

According to a CBI release, Sandeep Silas is a 1984-batch Indian Railway Traffic Service (IRTS) officer.

M.S. Chalia, the second officer, also came under the scanner of the CBI for the alleged involvement of his son's company in the scam.

The CBI suspected that the private catering companies could have paid illegal remittances to the officer through the company run by his son for favours shown to them for supplying inferior quality of packaged drinking water on premium trains.

On Friday, CBI registered a case against Chalia, Silas and seven private companies -- RK Associates Pvt Ltd, Satyam Caterers Pvt Ltd, Ambuj Hotel and Real Estate, PK Associates Pvt Ltd, Sunsine Pvt Ltd, Brandavan Food Product and Food World -- under the provisions of Prevention of Corruption Act.