The U.S. Securities and Exchange Commission has launched an investigation into Royal Group Technologies Ltd. past accounting practices and disclosures.

“We have been communicating with the SEC to keep it advised of the progress of Royal Group’s internal investigations related to the issues of concern to the company, the Ontario Securities Commission (OSC), and Royal Canadian Mounted Police,” said James Sardo, chair of the special committee of Royal Group’s board of directors, in a release.

“Royal Group will continue to cooperate fully with the SEC as we are doing with the OSC and RCMP,” Sardo said.

Shares of building products maker (TSX:RYG) closed down 15¢ at $13.30 on the TSX.

Royal Group’s manufacturing facilities are primarily located in North America, with international operations in South America, Europe, and Asia.