A 21-year-old Chelsea man was ordered held without bail today at his Suffolk Superior Court arraignment on charges that he allegedly stabbed 30-year-old Carlos Ramirez to death outside the defendant’s residence late last year, Suffolk County District Attorney Daniel F. Conley said.

Indicted Dec. 21 by the Suffolk County Grand Jury, DENNIS BOWEN (D.O.B. 9/8/89) was formally charged today with one count of second-degree murder for Ramirez’ fatal stabbing outside 759 Broadway, where Bowen lived.

In recommending that Bowen be held without bail, Assistant District Galatis told Suffolk Superior Court Clerk Magistrate Gary D. Wilson that Chelsea Police responded to a 911 call for a person stabbed at about 11:00 a.m. on Nov. 25, 2010. Once on the scene, officers discovered the victim suffering from a single stab wound to the chest, which Galatis said “was later determined to have injured his heart and one of his lungs.”

Ramirez was transported by ambulance to Whidden Memorial Hospital, where he was pronounced dead a short time later.

“Witnesses reported hearing two men arguing and swearing from inside of the common hallway of the building at 759 Broadway,” Galatis said. Witnesses then saw Bowen and Ramirez physically fighting as they exited the front door, she told the court.

“A third – at this point, unknown – man who, until this point was only watching and listening, then intervened in the fight by pushing Mr. Ramirez with one hand,” Galatis said.

Ramirez then fell to the sidewalk and Bowen “struck him several time to the body with closed fists.”

The defendant was then observed standing up, she said, at which point he “produced a knife, then bent over Mr. Ramirez and stabbed him.”

Bowen then left the scene on foot, prosecutors say.

Officers later entered 759 Broadway, Galatis told the court, and proceeded to the defendant’s second floor residence. They observed that the defendant’s door was open, but that nothing appeared to be missing from inside the apartment.

“These two parties likely did not know each other,” Galatis said.

Based on that information and additional evidence developed within the first 24 hours, State Police homicide detectives assigned to the DA’s office and Chelsea Police detectives obtained a warrant for Bowen’s arrest the next day. Bowen turned himself in on Nov. 27, 2010.

Bowen is represented by attorney John Tardif. He is expected to return to court on Feb. 24, 2011.