JEFFERSON CITY, Mo. (AP) – A Missouri state senator is calling for Gov. Jay Nixon to resign for “failed leadership” during the protests in Ferguson following the fatal shooting of a black 18-year-old by a white officer.

Sen. Maria Chappelle-Nadal on the first day of session Wednesday filed a formal “remonstrance” against the governor. It says Nixon should resign and, if he doesn’t, the House should consider impeaching the governor for what she called “incompetence.”

A spokesman for Nixon declined to comment.

Chappelle-Nadal has been an outspoken critic of Nixon since the Aug. 9 shooting of Michael Brown by officer Darren Wilson. Among other things, she contends Nixon wasn’t initially involved enough as police responded to protesters with riot gear and tear gas.

Chappelle-Nadal’s measure will be referred to a committee, like other legislation.