MIAMI -

A family is pleading for help after a Miami man was critically injured in a hit-and-run crash.

Police said Dayan Sotolongo, 29, was hit by another car while riding his moped Thursday in downtown Miami. But instead of staying to help, the driver of the car left the scene.

Police said Sotolongo was riding his moped to work in the westbound lanes of Northwest 79th Street. He was hit by the car making a left as he tried to get in front of a transit bus.

Parts of the other driver's vehicle left at the scene are believed to be part of a four-door Infinity.

Detectives said the driver most likely would not have been charged if he had just stayed at the scene.

"Based on the physical evidence that we have, he was probably not at fault in the crash," said Joseph Kennedy of the Miami Police Department. "But the fact that they fled, that's what makes it a crime."

Sotolongo, who is married and has a newborn baby girl, remains at Jackson Memorial Hospital in critical condition. His family said he suffered head trauma and is in a coma.

Police are looking for a 2012-2014 four-door, white Infinity with front-end damage. They believe the first three digits of the license plate are 37 B.