The Ontario Securities Commission (OSC) has sent an enforcement notice containing “allegations of a serious nature” to Chinese timber company Sino-Forest (TSE.TRE), The Wall Street Journal reported. Sino-Forest said the OSC, which has been investigating allegations that the timber company committed fraud, has also issued enforcement notices to current and former executives, including Chief Financial Officer David Horsley. The notice alleged that the company had engaged in conduct that violated sections of the Ontario Securities Act. The news followed the Toronto Stock Exchange’s announcement last week that it will delist Sino-Forest’s common shares, effective at close of trading on May 9. The TSE cited failure to meet listing requirements and file timely financial statements as its reasons for delisting the company.