The incident happened last Thursday morning at the intersection of Fremont Avenue and Orchard Street. Donna Omlin, who was working as a crossing guard to protect children, remains in the hospital.
Omlin was holding a stop sign and had just finished escorting several children across the road when she was hit.
Montclair police are searching for 32-year-old Israel Carrion. They believe he was behind the wheel of the car that hit Omlin.
"During a search of the area, detectives did find the suspect's vehicle and later got him identified and there's currently an arrest warrant for the suspect," said Sgt. Bryon Kelly with the Montclair Police Department.
Omlin's family says she faces a long recovery.
"She sustained extremely serious injuries. She's had a few surgeries. We are hoping that she's on the road to recovery. She's up against another surgery tomorrow. She's fighting through this," said Cindy Agostini, Omlin's niece.
Anyone with information was asked to call detectives at (909) 621-4771.