NEW YORK (CBSNewYork/AP) — Police have arrested a suspect in connection with the death of a man found wounded at a downtown Manhattan subway station.

David Green, 57, was charged with manslaughter in connection with the Aug. 28 attack that killed 51-year-old Alfredo Ramos.

Police found Ramos with a head injury at the Delancey Street-Essex Street subway station in the Lower East Side just after 10 p.m. He died on Thursday.

Police said there was a dispute between the two men inside the subway complex. Green allegedly struck Ramos in the head, 1010 WINS’ Roger Stern reported.

Ramos lived with his brother in Jersey City, and their former super Juan Rivera said he always thought of them both as good people.

“They was working, working, working — day and night working,” he told Stern. “He was a very good person. My sister told me last night. I was so sorry about that.”

Ramos’s son, Eric, told 1010 WINS he had to make the difficult choice to take his father off life support.

“It hurts, the fact that I had to make a decision like I did in order for him to go in peace, but he was a great dad,” Eric Ramos said. “Growing up, he was the best father anybody could have. He tried to provide me as much as he could. Him being an immigrant, he worked very hard to give me whatever it was that I needed.”

Eric Ramos said Green’s arrest brings him little comfort.

“He’s going to spend his time in prison, but it’s not going to bring my father back,” he said.

Ramos worked at a fruit store in Brooklyn. The New York City Medical Examiner’s office will determine the cause of his death, police said.

(TM and © Copyright 2015 CBS Radio Inc. and its relevant subsidiaries. CBS RADIO and EYE Logo TM and Copyright 2015 CBS Broadcasting Inc. Used under license. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press contributed to this report.)