Authorities yesterday arrested teenage twins from the North Side in the shooting death Sunday of an 18-year-old man who was on his way to pick up children for a trip to the Pirates game.

Pittsburgh homicide detectives charged Davon and Javon Knox, 17, with homicide in the fatal shooting of Jehru Donaldson.

Both suspects were in custody at police headquarters last night.

Mr. Donaldson was removed from life support yesterday at Allegheny General Hospital and pronounced dead at 12:05 p.m.

Detectives believe the brothers shot Mr. Donaldson at about 1:45 p.m. as he sat in his car in the 1700 block of Brighton Place on the North Side, not far from police headquarters.

Mr. Donaldson had driven to a house in that block to pick up the young children of his sister's girlfriend to take them to the game.

"He was just doing a good deed, taking some kids to the ballfield," said Detective Steve Hitchings of the city homicide squad. "And this is how he's greeted."

Police believe Mr. Donaldson, an athlete who recently graduated from Oliver High School and planned on attending Edinboro University of Pennsylvania in the fall, was an innocent victim who simply drove into the wrong neighborhood.

Detectives think the gunmen targeted him because he was not from their part of the North Side.

Detective Hitchings said the suspects walked over to Mr. Donaldson's car as he pulled up to the house. After a brief discussion, he said, one of the teens -- it wasn't clear yesterday which one -- pulled a gun and fired once as Mr. Donaldson tried to drive away. The bullet hit him in the head.

Detective Hitchings said he had just driven through that area himself about an hour before the shooting and saw many people out on the street. Often in such cases, witnesses who clearly saw everything refuse to come forward, he said. This time it was different.

"Usually you don't get a great deal of cooperation, but in this case we did receive a lot of information," he said.

Mr. Donaldson came from a solid family and was well-regarded, according to police and his former basketball coach at Oliver, Carey White.

Last year, he played football on Oliver's team, which won its first City League championship in 64 years. The basketball team, on which he played forward, made it to the City League finals.

Mr. Donaldson also finished second in the long jump at the City League track and field championships.

"He wasn't the best athlete on the football or basketball team," Mr. White said, "but there wasn't anyone who worked harder than him or wanted to win more than he did. On our basketball team, we had six seniors this past year and I can say without a doubt that those other five guys really looked at Jehru as a leader."

Mr. White said the shooting was the first time in his 16-year career that he's had to deal with the death of a player.

"You see some of these street kids out there doing whatever and he wasn't one of those kids," he said. "It has been difficult to learn of this whole thing because of the kind of kid Jehru was. He was a nice kid, from a good family, with manners, and a kid who was always polite to everyone."