UPDATE: Jenkins was back at practice during stretching in the portion of Friday's practice open to the media. Giants coach Pat Shurmur will speak to media after practice.

Giants All-Pro cornerback Janoris Jenkins lett Thursday's practice abruptly, and the team said it was due to a family situation.

Jenkins' exit is unrelated to his incarcerated brother, according to a person with knowledge of the situation who requested anonymity.

Jenkins' brother, William H. Jenkins, is being held on aggravated manslaughter charges stemming from the death of Roosevelt Rene, a friend of Janoris Jenkins who was found dead at Jenkins' spacious home in Fair Lawn, on June 26.

No court dates have been set for William Jenkins in Bergen County because he remains in police custody in New York, according to the prosecutor's office. He was arrested in New York, where he has a long rap sheet.

"It's shocking," Jenkins said of Rene's death, during training camp. "But I've still got to come out and play football. Right now, my main focus is to get better every day with my teammates and stay focused."

Jenkins had a strong performance in the 2018 season opener against the Jacksonville Jaguars on Sunday, intercepting a pass in the first half and finishing with seven tackles in a 20-15 loss.

The Giants held Jaguars quarterback Blake Bortles to 176 passing yards with one touchdown and one interception.

If Jenkins needs extended time away from the team, the Giants could travel to Arlington, Texas, for Sunday night's game against the Dallas Cowboys with the five active cornerbacks currently on the roster. There is only Friday's practice remaining to promote a defensive back from the practice squad or sign a free agent.

Matt Lombardo may be reached at MLombardo@njadvancemedia.com. Follow him on Twitter @MattLombardoNFL