Chicago Mayor Rahm Emanuel faces increased pressure to resign, as local black religious leaders called early Friday for a “vote of no confidence” against him for the 2014 police shooting of a 17-year-old black teenager.

Several religious leaders, who demanded greater transparency with incidents involving the police, said they plan to collect petition signatures to help force the mayor’s ouster.

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They also called for a special prosecutor in the Laquan McDonald case against white Chicago Police Officer Jason Van Dyke, according to the local reports.

The release of a police video of the shooting of the teenager and the filing of a murder charge against Van Dyke on Nov. 24 came more than a year after McDonald’s death. That delay was blamed on Emanuel and the top local prosecutor, and has prompted more than two weeks of protests in the nation’s third-largest city.

Members of McDonald’s family are expected to speak at a news conference at a church at 11:15 a.m. local time (1215 ET), media reports said.

More protests are planned for Friday, the religious leaders said.

High-profile killings of black men by law enforcement in U.S. cities have stirred a national debate about the use of force by police, particularly against racial minorities.

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Hundreds of protesters marched through the streets of Chicago and staged “die-ins” on Thursday, calling for the resignation of Emanuel a day after he emotionally apologized for the police shooting of McDonald.

Emanuel has recently taken steps to reform the police department, including setting up a task force to review accountability and firing the police superintendent.

But outrage has mounted over the McDonald shooting and police misconduct overall. Two black state representatives have introduced a bill that would allow the mayor to be recalled.

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Meanwhile, the city has begun a nationwide search for a new police superintendent. The Chicago Police Board, a group of citizens appointed by the mayor, is taking applications through Jan. 15.

(Reporting by Suzannah Gonzales; Editing by Ben Klayman and Bernadette Baum)