NEW DELHI - Lightning killed at least 11 people in eastern India as large swaths of the country reeled under the worst floods in years that have left hundreds dead and millions displaced, officials said on Monday.

The victims were working in fields in Odisha state when lightning bolts struck them, the state's top disaster management official said. Fifteen others were injured.

"The death toll is likely to rise as many were critically injured," said A.K. Das, head of the authority.