Allentown police said they've cracked a deadly stabbing case, and they said their big break came from the victim himself.
"To see your own flesh and blood bleeding, dying in front of you, it's a very shocking sobering thing to see," said Robert Tally.
It was early Sunday morning when Tally saw his brother, Robert Brandon, stumbling across the street in a desperate search for help.
Brandon, 39, had just been stabbed, and the blood stains covering South 11th Street in Allentown gave insight into the chaos.
"Gruesome, it looked like. I still can't process what I saw," Tally said.
In the company of a police officer, Brandon was taken to a hospital.
"On the way, officer asked him who did this to you. He said, 'Pedro,'" said Lehigh County District Attorney Jim Martin.
Brandon later died, but police had a clue and traced it to Pedro Rodriguez, 27, of Allentown.
"He and his girlfriend traveled to Selinsgrove, Snyder Co., which is in the middle of the state," Martin said.
Jeff Burch said he, Brandon and Rodriguez were part of group that worked at the Home Depot distribution center in Breinigsville, Lehigh Co., and then often hung out after their shifts.
Police said an argument led to the homicide.
"We're all trying to figure out what happened to Pedro. Why would he do this? Robert would not argue. He was not the type of person to argue and fight with you," said Burch.
As for Tally, he's just trying to come to grips with the loss of his brother.
"He's never been the type of person to be in a situation like this," Tally said.
Rodriguez was charged with criminal homicide and committed to the Lehigh County Prison without bail. He's due back in court next week.