The local television does not have a website.
The city official also confirmed that Sun lives in Shuangcheng.
According to Wang's Weibo, she became indebted to Sun after he arranged to provide her retired mother with a pension and social security benefits by putting her on the list of factory retirees, even though she never worked there.
Wang said Sun threatened to cut her mother's pension unless she continued to provide sexual favors.
She wrote that he demanded sex in 1999 when she was married to another man and was 7-month pregnant.
"I haven't exposed him until now because I'm afraid of his influence," Wang told the Global Times Sunday via Weibo in the only response she provided to several questions she was asked.
Wang claimed that her mother was one of many unemployed people Sun had added to the factory's list of retired staff members.
A team of investigators was set up by the local Party commission for disciplinary inspection on Saturday which will make its report public when completed, the publicity department said.
Record number of hopefuls sit annual civil service exam