B.C. Premier Christy Clark announced Monday that her chief of staff Ken Boessenkool has resigned over an “inappropriate incident.”

Clark said in a statement he stepped down after she was “made aware of an incident of concern.”

Boessenkool’s resignation letter said he was involved in an incident where he acted “inappropriately.”

“I was wrong, regretted my behaviour very much and immediately and

unconditionally apologized,” he said.

Boessenkool said he will return to Calgary to be with his family, who he has let down.

“This will give me a chance… to be with my family – who I have also let down – and from whom I have been separated on a weekly basis for most of the last eight months,” he said.

Dan Doyle, former chair of BC Hydro, has taken over as chief of staff.

"A career public servant who helped build British Columbia's infrastructure, Dan also played a key role in making the 2010 Olympic Winter Games a success,” Clark said.