Odin Lloyd, a 27-year-old semi-pro football player for the Boston Bandits, was found slain June 17. Officials ruled the death a homicide but did not say how Lloyd died.
Lloyd's relatives said he was dating the sister of Hernandez's fiancee, that the two men were friends and that both men were out together on the last night of Lloyd's life.
It's unclear why Hernandez was being taken into custody Wednesday around 9 a.m. and put into the back of a police cruiser. He was wearing a white V-neck T-shirt, with his arms inside the shirt and behind his back as he was led from his North Attleborough home. He casually spit into some bushes on his way to the car.
Hernandez was arrested on a state police warrant and was being booked at the North Attleborough police station, state police said on the agency's Twitter account. State police said they won't discuss the charge against Hernandez until it's presented in Attleboro District Court later Wednesday.
The Associated Press emailed a message to his attorney, Michael Fee, who hasn't discussed the investigation beyond acknowledging media reports about it. A message also was left with the Bristol County district attorney's office.
Lloyd's mother, Ursula Ward, declined to comment at her Boston home Wednesday morning.
"Nothing to say, please. Thank you," she said, before shutting the door.
State police have searched in and around Hernandez's home in North Attleborough several times. At least three search warrants have been issued in connection with the investigation.
A Patriots team spokesman said Monday morning that the team had no comment.