DALLAS — The case against a white Dallas police officer who shot and killed a black neighbor in the neighbor’s home will be presented to a grand jury, which could decide on more serious charges than manslaughter, the district attorney overseeing the case said Monday.

Lawyers for the victim’s family questioned why it took three days for officer Amber Guyger to be charged and why she was so quick to use deadly force in her encounter with 26-year-old Botham Jean, who lived in the apartment directly above hers. She told authorities she mistook the neighbor’s unit for her own.

The officer was arrested Sunday night and booked into jail in neighboring Kaufman County before being released on bond.

When asked why Guyger was allowed to surrender somewhere other than Dallas County’s jail, Dallas County District Attorney Faith Johnson said the decision was made by the Texas Rangers, who are also investigating.

Guyger had just ended a 15-hour shift Thursday when she returned in uniform to the South Side Flats apartment complex. She parked on the fourth floor, instead of the third, where she lived, according to an affidavit filed for the officer’s arrest warrant, possibly suggesting that she was confused or disoriented.