New Delhi: Two days after the BJP was routed in Bihar, the party's old guard including L.K. Advani on Tuesday took on Prime Minister Narendra Modi and BJP president Amit Shah, demanding "a thorough review" of the debacle but said it can't be done by those who were responsible.

In a virtual challenge to Modi's leadership who became the prime minister in May 2014, former party presidents Advani and Murli Manohar Joshi, former union minister Yashwant Sinha and former Himachal Pradesh chief minister Shanta Kumar said the Bihar defeat showed that the BJP had learnt nothing from its crushing defeat by the AAP in Delhi in February.