A serious pedestrian crash forced the closure of a portion of Route 109 in West Babylon early Tuesday, Suffolk County police said.

Police said the incident occurred around 6.30am when a vehicle hit a pedestrian, but details are still emerging.

While police did not indicate the severity of any injuries, they did say Crime Scene unit detectives were at the scene and the road between Arnold Boulevard and Golding Boulevard was closed until further notice. Drivers are advised to avoid the area.

Check back for updates on this developing story.

A reporter for Newsday since 1981, John Valenti has been nationally honored by the Associated Press and the Silurian Society for his investigative, entrepreneurial and breaking reporting, as well as columnist, and is the author of “Swee’pea.” Book about former New York playground basketball star Lloyd Daniels. Valenti appears in the Emmy-winning ESPN 30 for 30 movie “Big Shot.”