The 55-year-old man who was hit by a sport utility vehicle driven by the Key West mayor's daughter has died, Key West police Chief Donie Lee said Wednesday.

"This is a tragedy and our heart goes out to his family and friends," Mayor Craig Cates said Wednesday. "We send our deepest condolences."

William St. John, who lived on the streets of Key West, was on life support until Sunday afternoon, when he was pronounced dead at Ryder Trauma Center in Miami, where he was airlifted from Lower Keys Medical Center, Lee said.

He was struck by Nicole Canalejo, 34, in the 2500 block of North Roosevelt Boulevard around 2:45 p.m. on March 3.

No charges have been filed and reports have not been released because the investigation is ongoing, Lee said.

Reports will not be made public until toxicology reports return from the Florida Department of Law Enforcement laboratory, at which time police will decide whether to file charges, spokeswoman Alyson Crean said.

Police would not say whether toxicology tests were done on Canalejo, St. John or both.

Police were not able to reach St. John's family members, Crean said.

The crash was investigated as a homicide from the start because of the severity of St. John's injuries.

Canalejo was driving a gray Chevrolet Equinox SUV that was parked at a nearby hamburger restaurant shortly after the wreck. In what direction she was driving and St. John was walking in the street remains in the report and has yet to be finalized, Lee said.

Cates said his daughter is devastated by the wreck. He also declined to comment on the crash, citing the unfinished police investigation. He added that traffic and pedestrian safety remains an issue the city needs to address. He recently announced that he is convening a Mayor's Advisory Committee on the Homeless to look at such safety issues. "This is obviously something that we are trying to work through and correct," Cates said.

alinhardt@keysnews.com