The leader of the New York Senate has surrendered to face charges including extortion and soliciting bribes amid a federal investigation into the awarding of a $12 million contract to a company that hired his son.

FBI officials say Republican Dean Skelos of Long Island surrendered at the bureau’s office in Manhattan at about 9:30 a.m. Monday.

Skelos said last month he was cooperating fully and wouldn’t resign his leadership post. He’s hired an attorney in response to the investigation, which focuses on whether Skelos influenced Nassau County’s decision to award the 2013 contract to Arizona-based AbTech.

Skelos’ 32-year-old son, Adam, worked for the company as a consultant. Adam Skelos was charged, too.

AbTech says it’s cooperating with authorities and is not considered a target in the probe.

Skelos and his son face the following charges:

— Conspiracy to commit extortion under color of official right
— Conspiracy to commit honest services fraud
— Extortion under color of official right acting as a real estate developer
— Extortion under color of official right acting as an environmental technology comnpany
— Solicitation of bribes and gratuities acting as a real estate developer
— Solicitation of bribes and gratuities acting as an environmental technology company

(AP)