A 40-year-old woman who was killed in a hit-and-run in Bridgeport over the weekend "was an angel," according to her employer.

Kemesha Roberts Johnson was a certified nursing assistant. For the past two years, the primary caretaker of a Trumbull woman with Alzheimer's disease.

"She was always so upbeat, so positive," said the woman's daughter, Michele, who asked News 12 not use her last name. "She took such good care of my mother, and she treated her as if she were taking care of her own mother. They would just laugh and dance, and she was such a wonderful human being. "

Michele got emotional as she talked to News 12 about Roberts Johnson. "It's a terrible tragic loss. She'll be missed."

Roberts Johnson died over the weekend after crossing Boston Avenue at Remington Street. Surveillance video from a nearby business shows a car crash into her and drag her an estimated 200 feet, never stopping.

"I was in bed, and I just heard screaming," Jennifer Rearden told News 12. "And I looked out the window, and I saw someone laying outside."

Rearden is a nurse and said she ran out to see if Johnson had a pulse.

"I went straight to her and, you know, we covered her with a blanket and there were no vital signs," Rearden said. "It was awful. My condolences to the family."

Bridgeport police said the car involved is a silver or gray Honda Civic that was involved in another crash less than a mile away right before. A witness reported she was rear-ended by the car at the intersection of Barnum and Bishop avenues while stopped at a light. She told police the Honda backed up and hit a parked car, then took off—in the process sideswiping her car and a parked car. The witness told police she followed the Honda to try to get a license plate and saw the car hit Johnson.

"Whoever did this is a monster," Reardon told News 12.

Police continue to investigate and search for the driver. Anyone with information on the fatal crash can call Officer Thomas Gallbronner at 203-576-7640 or use the Bridgeport Police Tip Line at 203-576-TIPS.