Police told Action News that a raft overturned around 5 p.m. Wednesday, leaving several people stranded in the water in East Penn Township.
Officials said at least one individual suffered serious injuries.
Emergency crews gathered near the Bowmanstown boat ramp off Bowman Road, close to the Route 895 bridge, as rescue efforts were underway.
Authorities have not released additional details about the victims or what led to the incident.
Stay with Action News as we continue to follow this developing story.