New Delhi: Court of Arbitration for Sports, Switzerland upheld International Athletics Federation's (IAAF) appeal to increase the ban period of the six Indian athletes, including three Asian and Commonwealth Games gold medallists from one to two years.

The decision of the CAS, announced on Tuesday night in Lausanne, is final and no appeal lies against its decision. Three of the six athletes were present at the hearing held on Monday while the other three pleaded their case via teleconference.

Ashwini Akkunji, Mandeep Kaur and Sini Jose were part of the Indian 4X400m relay quartet that won gold in 2010 Commonwealth Games and the Asian Games in Guangzhou a month later. The other three dope-flunked athletes are Juana Murmu, Priyanka Panwar and Tiana Mary Thomas -- all 400m runners.

With the CAS ruling that the ban begins from the day of provisional suspension, Ashwini and Priyanka would serve ban till July 3 next year as they were provisionally suspended on July 4 last year. Mandeep and Juana will be banned till June 23 next year while Sini and Mary Thomas will serve ban till June 30 next year.

The IAAF had filed an appeal last month before the CAS challenging the one-year ban imposed on the athletes by a NADA panel last year, stating that they should not be treated leniently but should be handed the maximum ban of two years.