ALLENTOWN (AP) Two children and their grandfather are injured after being struck by a vehicle near the Great Allentown Fair.

The Express-Times of Easton reported the 5-year-old boy was in serious condition as a result of the Tuesday afternoon incident.The paper says the boy, his 13-year-old sister and their 64-year-old grandfather were all patrons at the fair.A police captain wasn't able to provide details about the others' injuries.Police say their accident reconstruction team is trying to figure out what happened. The driver of the vehicle remained at the scene.