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

Police said the incident happened around 6:30 a.m., with a vehicle hitting a pedestrian, but said details were still emerging.

Although police did not characterize the severity of the injuries, they said detectives from the Crime Scene Unit were at the scene and said the road was closed until further notice between Arnold Avenue and Golding Avenue. Motorists are advised to avoid the area.

Check back for updates on this developing story.

John Valenti, a Newsday reporter since 1981, has been honored nationally by the Associated Press and the Silurian Society for investigative, business and breaking news reporting, as well as column writing, and is the author of “Swee’pea,” a book about former New York basketball star Lloyd Daniels. Valenti appears in ESPN’s Emmy Award-winning 30 for 30 “Big Shot.”