One of the victims, Richard Booker, 49, recently was released from a Flint hospital where he has been for the last three weeks after being stabbed. He told ABC News that he has 68 staples throughout his back and belly and has slash wounds on his arms because he tried to prevent the man from "cutting off his face."
"I've never hurt so much in my life, never come so close to death," Booker told ABCNews. "I was about dead."
Booker, who is white, dismisses the notion that the attacks are racially motivated.
"I'm obviously not black. The guy's just a stone cold killer," Booker said.
Booker was stabbed five times, including a roughly 12-inch-long vertical slash from below his belly button all the way up his chest. He lost eight pints of blood from his wounds.
Antwoine Marshall, who was attacked two weeks ago, described a similar experience and similar wounds. He told ABC News he was stabbed six times in his stomach and chest.
"It's a very, very violent type of crime," Leyton told "Good Morning America" Wednesday. "Maybe he's enjoying watching them suffer, maybe he's enjoying watching them wriggle around in pain. But we really don't know what he's thinking, and we won't until we bring him in and talk to him."
More than 450 tips flooded in to authorities in Flint, where 16 of the attacks and all of the fatalities have occurred, according to Michigan State Police 1st Lt. Gene Kapp. Leesburg and Toledo police have also received tips.
The link between the attacks, which began in May, was not apparent until recently.
"There's similarities in many things. The weapon used, the suspect, the area," Kapp said Wednesday. "Those similarities cannot be ignored."
Victims have told police the crimes occurred when they were alone, and the suspect approached them asking for directions or help with his car. Then, he stabbed them with an edged weapon, police say.
Booker's story matched this one. He said the man asked him for help opening the hood of his SUV.
The suspect is a white male in his 20s or 30s who stands roughly 5 feet 11 inches tall to 6 feet 2 inches tall, and weighs approximately 180 to 210 pounds. He frequently wears a baseball cap during the attacks, according to police.
Capp said the authorities formed a task force made up of all the law enforcement agencies in Michigan's Genesee County, including the Flint Police Department, the Michigan State Police and the FBI.
Police say the suspect has been seen driving a dark green Chevy Blazer SUV with a model year ranging from 1995-2005 with rust and dents on the hood. Leesburg police released a video on Tuesday that shows a vehicle matching that description driving through a parking lot allegedly stalking one of his victims.
ABC News' Michael S. James, Jason Ryan, Diane Boozer, Steve Osunsami and Lisa Stark contributed to this report.