A Texas state trooper who arrested Sandra Bland after a contentious traffic stop last summer was fired Wednesday after being charged with perjury for allegedly lying about his confrontation with the black woman who died three days later in jail.

Trooper Brian Encinia claimed in an affidavit that Bland was "combative and uncooperative" after he pulled her over and ordered her out of her car. The grand jury identified that affidavit in charging Encinia with perjury, special prosecutor Shawn McDonald said Wednesday night.

Hours after his indictment, the Texas Department of Public Safety said it would "begin termination proceedings" against Encinia.

Bland's arrest and death — which authorities ruled a suicide — provoked national outrage and drew the attention of the Black Lives Matter movement. Protesters linked Bland to other black suspects who were killed in confrontations with police or died in police custody, including Michael Brown in Ferguson, Missouri, and Freddie Gray in Baltimore.

Video of the stop shows Encinia drawing his stun gun and telling Bland, "I will light you up!" She can later be heard off-camera screaming that he's about to break her wrists and complains that he knocked her head into the ground.

Encinia's affidavit stated he "removed her from her vehicle to further conduct a safer traffic investigation," but grand jurors "found that statement to be false," said McDonald, one of five special prosecutors appointed to investigate.

She was taken to the Waller County jail in Hempstead, about 50 miles northwest of Houston. Three days later, she was found hanging from a jail cell partition with a plastic garbage bag around her neck. Authorities have ruled she committed suicide, and the grand jury has already declined to charge any sheriff's officials or jailers in her death.

The perjury charge is a misdemeanor that carries a maximum of one year in jail and a $4,000 fine. Encinia was not immediately taken into custody, and an arraignment date has not yet been announced.

About two dozen protesters attended Wednesday's news conference where the indictment was announced. One protester's sign read, "Legalize black skin."