The Korea Sport Olympic Committee(KSOC) has told the Court of Arbitration for Sport(CAS) that the current ban preventing South Korean swimmer Park Tae-hwan from competing in the upcoming Summer Olympics can't be subject to arbitration.

The KSOC made the decision during marathon internal meetings late into the night on Tuesday after the CAS last Thursday sent an official statement asking for the KSOC’s stance on the case.

Park finished serving an 18-month ban imposed by FINA, the world governing body of swimming, in March this year after he failed a doping test in 2014. But under KSOC’s rules, athletes cannot compete on national teams for three years after serving penalties related to doping, indicating Park could be banned from participating in the Rio De Janeiro Olympics in August.

Park had called the penalties overlapping and filed an appeal, asking the CAS to mediate.

The CAS had asked the KSOC if the decision on April seventh by the Fair Sports Commission was its final stance.

The KSOC said it did not receive formal requests from the swimmer to amend current rules and had not decided if it should allow him to compete on the South Korean national team in the Rio Games, adding that hence, the CAS cannot mediate as of now.