MIAMI -- Several people called 911 after witnessing events related to the vicious attack of a 65-year-old homeless man whose face was mostly chewed off along a busy Miami highway, according to recordings released Friday by authorities.

Callers only reported seeing two men fighting in the shadow of The Miami Herald headquarters but did not mention seeing Ronald Poppo's face being chewed.

Surveillance video shows Rudy Eugene, 31, attacking Poppo alongside the highway last Saturday afternoon. A police officer fatally shot Eugene during the attack. Police have not released a motive for the attack.

"He's going to kill that man, I promise you," a female bus driver said, urging a 911 operator to send help. Poppo remains hospitalized.

The driver, who wasn't named by authorities, described the scene as she drove by.

"Listen, there is a naked man on the MacArthur Causeway," she said. "He is beating another man to a pulp – like on top of the man, beating him, the man is bleeding."

Another caller said the two men were fighting, saying they nearly knocked over an elderly bicyclist.

"These two bums were going at it with each other, taking up the whole lane," the caller said. "I think they were fighting or something."

The unidentified man gave his phone number to the 911 operator. He declined to comment when contacted Friday evening by The Associated Press.

A second male caller didn't mention the fight, instead reporting that he saw a man taking off his clothes and throwing them into traffic.

"You can't miss him. He's naked," the man said.

HOW YOU CAN HELP: The Jackson Memorial Foundation has set up a fund to assist Ronald Poppo in his recovery, which experts in facial reconstruction have said will include lengthy treatment, staged reconstruction, and psychological care. Donations can be made by check or online at jmf.org.
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  • A City of Miami police officer stands watch near the scene where a naked man, far right, was shot dead on the MacArthur Causeway ramp onto Northeast 13th Street in Miami on Saturday, May 26, 2012. A witness said the naked man continued to chew on the face of another naked man on a Miami highway ramp and growled when a police officer tried to stop him. The victim remained hospitalized Monday. (AP Photo/The Miami Herald, Marsha Halper) MAGS OUT

  • First responders treat Ronald Poppo after the attack.

  • Rudy Eugene, undated photo

  • Ronald Poppo

  • Westbound traffic on the MacArthur Causeway, approaching the Northeast 13th Street ramp in Miami, is backed up Saturday May 26, 2012, after a police officer fatally shot a naked man on the ramp who was chewing on the face of another naked man. The victim remained hospitalized Monday. (AP Photo/The Miami Herald, Marsha Halper) MAGS OUT

  • Photos Released of Face-Chewing Victim in Miami

    Doctors release photos of Ronald Poppo, the 65-year-old homeless man who was the victim of a gruesome face-eating attack in Miami.

  • Miami Homeless Discuss Face-Eating Attack

    Homeless men who live near where one man allegedly ate the face of a homeless man react to the crime. (May 30)

  • Gloria Allred, Yovonka Bryant

    Yovanka Bryant, right, and her lawyer, Gloria Allred, show a photo of Bryant and her boyfriend Rudy Eugene, during a news conference, Wednesday, June 6, 2012 in Miami. Bryant said she last heard from Eugene the day before he chewed off the face of a homeless man alongside a Miami highway. A police officer shot and killed Eugene. The homeless man remains hospitalized. (AP Photo/J Pat Carter)

  • Gloria Allred, Yovonka Bryant

    Yovanka Bryant,left, and her lawyer, Gloria Allred, discuss a recent attack on a homeless man by Brant's boyfriend Rudy Eugene, during a news conference, Wednesday, June 6, 2012 in Miami. Bryant said she last heard from Eugene, the day before he chewed off the face of a homeless man alongside a Miami highway. A police officer shot and killed Eugene. The homeless man remains hospitalized. (AP Photo/J Pat Carter)