A brother and sister from Fairfield have pleaded guilty to murder in the 2016 shooting death of a man outside a gas station.

Vincent Dwight Washington, 32, entered his guilty plea in January.

Barbara Ann Washington, 38, pleaded guilty last week, court records show.

The siblings were arrested nearly seven years ago in the fatal shooting of 28-year-old Adarius Elon Williams, a father of four.

Williams was gunned down at a Fairfield gas station in a dispute over an engagement ring, and the brutal shooting was captured on store surveillance video.

Both pleas were entered before Jefferson County Bessemer Cutoff Circuit Judge David Carpenter.

Vincent Washington was sentenced to 30 years in prison for convictions on murder, kidnapping and promoting prison contraband.

He was transferred Feb. 21 from the Jefferson County Jail to Kilby Correctional Facility in Montgomery.

Barbara Washington surrendered to the Jefferson County Jail on Monday.

She was sentenced to 20 years in prison with three years to serve followed by five years of probation and received a jail credit for 842 days.

The deadly shooting happened April 8, 2016, outside the Citgo station in the 900 block of Milstead Road. It was about 2:30 p.m. that Friday when Fairfield police arrived on the scene and found Williams had sustained multiple gunshot wounds.

Video of the killing showed a man with a towel wrapped around his head – identified by police as Vincent Washington – shoot Williams multiple times, nine of those shots fired almost point-blank after Williams had already collapsed on the ground. Williams was not armed.

According to police and court records, the brother and sister told a friend of Barbara Washington they would buy her gas if she drove them to the Citgo station that day. They were going to meet Williams because he wanted the engagement ring back that he had given to Barbara Washington.

Williams’ fiancé at the time of his death was also with him at the gas station the day he was killed.

The friend drove them to the service station but told police she didn’t know what was going to happen.

Once they arrived there, Vincent Washington got out of the car with a towel wrapped around his head.

When the friend realized something was amiss, she said she wanted to leave. At that point, according to court records, Vincent Washington told her, “(Expletive), if you drive off I’ll shoot you in the back of the head.”

The friend said she was afraid, and did what she was told to do. The video showed Vincent Washington and Williams arguing outside of the vehicle for about 12 seconds, and then Vincent Washington opens fire on Williams.

Williams fell to the ground on his back, and Vincent Washington stood over him and fired nine more shots.

Witnesses on the scene gave a description of a white Nissan Altima leaving the area. They said the vehicle was occupied by two females and a male. A short time later, Bessemer police said, a man suffering from gunshot wounds to the stomach and the hand showed up at UAB West, and a white vehicle reportedly had brought him there.

Authorities confirmed that man – later identified as Vincent Washington – at the hospital was involved in the Fairfield shooting. About 8 p.m., Fairfield police spotted the white Altima and stopped the vehicle. Barbara Washington and another woman were taken into custody. The second woman wasn’t charged.

After the shooting, according to court records, Barbara Washington took the gun used in the slaying to a friend’s house to hide it.

At some point during the incident, Vincent Washington was also shot by someone trying to help Williams. Police have never said who shot the suspect.

He spent several days in the hospital before he was released and booked into the Jefferson County Jail.

The pair’s sister was killed in an unrelated shooting in Fairfield the previous year.