An affiliate of local communications giant KT Corp. that is being investigated for large-scale loan fraud by an employee said Wednesday it filed for court receivership as it failed to pay back maturing corporate bonds. "We failed to pay back commercial paper (CP) worth 49.1 billion won (US$46 million) due to the tight money situation. We decided to go under court receivership," said KT ENS, which is affiliated with KT Corp., the country's No. 2 mobile operator.