ALLIED Group, Allied Properties (Hongkong) and Capital Asia were suspended from trade yesterday following receipt of chapters from an unreleased report being written by an inspector appointed by the Financial Secretary. The companies, which have been sent the chapters for their comments, warned yesterday that those same chapters were also being sent to others mentioned in the documents. ''In the light of the risk of unauthorised disclosure over the next few weeks . . . shareholders and warrant-holders of the companies are advised to exercise extreme caution in dealing with the companies' securities,'' the legal notice from the Allied companies states. Capital Asia's suspension was at its own request after just four minutes of trade. The company was part of the Allied stable when known as Wai Yick but the management now says it has no links with the Allied companies or Allied group chairman Lee Ming Tee. A notice from the exchange made it clear that the Allied companies were suspended by order of the exchange at the same time. Sections from the report, written by Mr Nicholas Allen, a partner and audit specialist with Coopers and Lybrand, have been sent to companies and individuals mentioned for their comments. Mr Allen's appointment was made in August last year and was marked by the unprecedented suspension of 10 companies. No details have been given of the terms of the investigation, which has involved interviewing more than 100 people.