A formal filing with the Securities and Exchange Commission is still forthcoming.

Avio has therefore temporarily suspended the formal filing procedure, they said.

The NRSC was not expected to release its August numbers until Sunday, the Federal Election Commission's formal filing deadline for the committees.

Fully audited numbers are now not due till March 14 after the firm was granted a reprieve for its formal filing by Japanese regulators.

Dresden said that the formal filing to sue has yet to be made but would follow in due course following a vote by the city.