Singapore state investor Temasek Holdings (TEM.UL) said Michael Dee, a senior managing director, will step down from his current role on April 30, less than two years after he joined the company.

Dee, a former investment banker who worked at Morgan Stanley (MS.N) for more than two decades, will remain in an advisory role as senior director until the end of 2010, Temasek said.

“Michael Dee’s decision to relinquish the role of senior managing director is part of executive movements,” Temasek spokeswoman Myrna Thomas said in a statement.