"Only Shatrughan Sinha and Shahnawaz Hussain are secular leader in the BJP," Lalu told mediapersons after attending the party's 16th foundation day in Patna.
Bollywood actor-turned-politician Satrughan Sinha is the BJP MP from Patnasaheb seat while Shahnawaz Hussain represents Bhagalpur in Lok Sabha.
Both Sinha and Hussain are two BJP leaders, who enjoy good relation with Lalu for years.
"I challenge the BJP to disclose the names of secular leaders other than these two leaders," Lalu also said.
Last month Lalu challenged Bihar Chief Minister Nitish Kumar to explain who is secular in the National Democratic Alliance. Lalu's comment came following Kumar's statement that the NDA should declare its prime ministerial candidate in advance and that the candidate should be secular.