DALLAS – A Dallas police officer who shot and killed a man in his apartment after she mistook it for her own has been arrested and charged with manslaughter, authorities said Sunday.

Officer Amber Guyger, 30, was booked into the Kaufman County Jail Sunday evening after Texas Rangers arrested her in connection with the shooting of 26-year-old Botham Jean. She was later released after posting a $300,000 bond, reported Fox News.

Dallas police officer

Dallas Police Officer Amber Guyger, right, is accused of manslaughter in the death of Botham Jean. (Harding University/Kaufman County Jail)

Investigators say that Guyger, a four-year veteran of the Dallas Police Department, shot Jean at around 10 p.m. Thursday, when she returned to her apartment building in the South Side Flats following her shift. Moreover, she reported the shooting to dispatchers and she told officers who responded that she had mistaken Jean’s apartment for her own.

Members of Jean’s family questioned Guyger’s explanation for the shooting and claimed that the fact she had remained free days after the shooting showed she was receiving favorable treatment.

“If it was a white man, would it have been different?” Jean’s mother Allison asked Friday. “Would she have reacted differently?”

Nevertheless, authorities reject this notion.

Dallas Police Chief U. Renee Hall said the officer’s blood was drawn at the scene so that it could be tested for alcohol and drugs. However, the test result will not be immediately known.

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Police Chief U. Renee Hall speaking to the press. (Screenshot NBCDFW broadcast)

Guyger was involved in an on duty shooting in May 2017, involving Uvaldo Perez.

According to an affidavit in the case filed against Perez, police were looking for a suspect when Guyger and another officer were called to assist a third. Perez got out of a car and became combative with Guyger and another officer. A struggle began and Guyger fired her Taser at Perez, who then wrestled it away from her. Consequently, she then drew her weapon and fired, wounding Perez in the abdomen.