A man is bleeding to death Tuesday night on the front lawn of a Fitchburg apartment building. A woman wrapped in a white sheet cradles him. Nearby, the dying man’s wounded older brother’s voice grows weak as he pleads for help over a cell phone. Behind the building, a third man speaks into his phone, describing how he shot the men.

Emergency dispatch tapes released Friday night describe in chilling detail the aftermath of the fatal shooting of Detarius Martin, 23, of Madison.

In one of the four tapes, a resident inside the apartment building peeks through his curtains and tells a Dane County 911 operator he was watching television when he heard four or five shots in succession.

“Somebody’s been shot four times and they’re lying in my yard right now,” the caller said. “He rolled over two, three times, then I saw him slumping over.”

The victim was being cradled by a woman wrapped in a white sheet, and another woman was nearby, he told dispatchers. In a second recording, the victim’s wounded brother repeatedly urges the dispatcher to send help quickly.

“Hurry up, come on. Bring someone right now,” Chukarius Martin rasps, his voice growing weaker as the call continues. He shouts several times to the women: “Is he still breathing?”

Perry Lucas, 28, has been arrested on a tentative charge of intentional first-degree homicide.

Police said the Martin brothers had accompanied Lucas’ estranged live-in girlfriend as she attempted to retrieve some of her belongings from the apartment.

Another woman was in the apartment on a date with Lucas, police said. Information gathered by investigators indicates that an argument broke out and Lucas fired several shots as the Martins were retreating down a hallway, police said.

After the shooting, Lucas stood behind the apartment building, and told a dispatcher a version of events.

“My roommate, she had brought some people over who I didn’t know, and she started acting crazy, and they attacked my girlfriend,” he said at one point in the tape. “They don’t live here, I’ve never seen them before in my life and they were getting — so I went into a spare room and got the gun and I said look I’ve got a gun. Leave.”

Later in the tape, Lucas said one man charged toward him.

Lucas is expected to make an initial appearance in Dane County Court early next week.