HOUSTON (AP) – A 27-year-old Houston military veteran has been charged with murder in the stabbing death of an 11-year-old who was walking home from school last month, police said Saturday.

Andre Timothy Jackson Jr. was arrested Friday afternoon at the Salvation Army in downtown Houston and charged later in the day, Mayor Sylvester Turner said at a news conference Saturday. Jackson is being held in the Harris County Jail on $100,000 bond. It wasn’t immediately clear whether he had an attorney.

Jackson is accused of stabbing Josue Flores as the sixth-grader walked home from school May 17. Josue was only a few blocks from home.

“We cannot bring him back, but I hope today’s announcement can perhaps bring a little bit of comfort to those who love him,” said Turner, who called the killing of the young boy, “senseless, brutal and cold-blooded.”

There is no motive in the slaying and no known connection between Jackson and Josue, Lt. John McGalin said Saturday.

Jackson is a veteran who had lived at the Salvation Army since mid-April, McGalin said. It wasn’t immediately clear which branch of service Jackson served in.

Earlier this week, authorities released surveillance video featuring a “person of interest.” The 36-second video showed a man running down a street not far from the scene wearing a green jacket with a partially obscured word containing the letters “LYMEN” on the hood of the jacket.

The video brought a tip about another video, which led investigators to Jackson, McGalin said. Jackson had the jacket with him when he was arrested, McGalin added.

Authorities initially charged a 31-year-old man with a long criminal history days after the killing, but that charge was dropped when detectives found evidence to support his alibi.

Questioned Saturday about how he was sure the right man has been arrested, McGalin said that Jackson’s alibi could not be verified and that he “provided a statement that corroborated a lot of things we knew to be true and led us to believe we have the right guy.”

Several witnesses told officers they heard loud screaming and saw Josue struggling with a man. The boy collapsed on the grass near the sidewalk and the man ran off. A bystander flagged down police and alerted them to the wounded boy, who was taken to a hospital with multiple stab wounds and pronounced dead a short time later.