Man suspected of killing brother in South Dallas was arrested after police chase in Louisiana

A man accused of killing his brother at a South Dallas home is being held in a Louisiana jail.

Shaun Detra Mack, 42, faces a capital murder charge in the fatal shooting of 44-year-old Rayford Mack. The Dallas County district attorney’s office accepted the case earlier this month, court records show.

Police were called the afternoon of Sept. 25 to an home the brothers shared in the 2700 block of Elsie Faye Heggins Street, near South Malcolm X Boulevard. A 911 caller had reported hearing a gunshot, then seeing a man drive off in Rayford Mack’s burgundy 1981 Buick Regal.

Officers found the door to the home locked, an arrest-warrant affidavit says. Once they forced their way inside, they discovered Rayford Mack lying on the floor, dead from a gunshot wound.

Later, a woman who also lived at the house told police that she and the Mack brothers were the only people with keys to the unit, the affidavit says.

Another witness told a detective that Shaun Mack had previously threatened to kill his brother multiple times, according to the affidavit.

The next day, authorities in Lafayette, La., about a 400-mile drive southeast of Dallas, attempted to perform a traffic stop on Rayford Mack’s 1981 Buick, the affidavit says. The driver — later identified as Shaun Mack — fled and led a pursuit about 20 miles into nearby New Iberia that ended with a crash into a roadside ditch.

Mack was booked into the Lafayette Parish jail on charges related to the chase including flight from an officer, unauthorized use of a motor vehicle and illegal carrying of a weapon, jail records show. He remains in custody, awaiting extradition to Texas on the murder charge.

His attorney could not immediately be reached for comment.

Mack has a long criminal record in Dallas County. In June he pleaded guilty to a family-violence assault charge in connection with a January incident in which he was accused of hitting a 57-year-old woman; he was sentenced to five years of deferred-adjudication probation, which authorities have since moved to revoke.

He pleaded guilty in 2013 to a charge of family-violence assault after hitting his girlfriend the previous December and was sentenced to six years of deferred-adjudication probation. His probation was revoked in 2016 after he violated a number of its conditions and he was sentenced to three years in prison.

Mack also has been convicted of a third family-violence assault charge, as well as felony counts of robbery, drug possession and assault, court records show.