Speaking to ANI, the BJP leader dubbed the result of the by-polls a threat for the state as well as for the nation.
"Araria isn't only a border area, it isn't only connected to Nepal and Bengal. An orthodox mentality has been formed after this. This is not only a threat for Bihar, but also for the country. It will become a terror hub," said Singh.
RJD on Wednesday won the Araria Lok Sabha bypoll by 61,788 votes.
RJD's Sarfaraz Alam, who was declared a winner, comprehensively beat his opponent Pradip Kumar Singh of BJP.
The bypoll for Araria seat was necessitated following the death of RJD MP Mohammed Taslimuddin. (ANI)