According to police, the bodies of Abhishek Kumar (11) and Muskan (09) were found in river Balan near Lakhanpur village of Begusarai district.
Both the boys were missing since last night.
In an another incident in Darbhanga, police fished out the bodies of Amrish Kumar (10) and Manish Kumar (12) from a pond after getting information from locals, Deputy Superintendent of Police Dilip Kumar Jha said.
Both were residents of Bela mohalla and were missing since last night, the DSP said.