BJP on Thursday attacked Delhi Chief Minister Arvind Kejriwal for supporting his Bihar counterpart Nitish Kumar in upcoming state assembly elections. The party alleged that their tie up is aimed at derailing BJP's development agenda.<br/><br/>Talking to reporters in New Delhi, BJP spokesperson Sambit Patra quoted Mr. Kejriwal's old tweets to criticize him in which he had termed RJD Chief Lalu Prasad's imprisonment in fodder scam case as a sweet deal. <br/><br/>Mr. Kejriwal today visited to Bihar to join Nitish Kumar at an event. Taking a dig at Mr. Kejriwal's attempts to distance himself from Lalu Prasad while supporting Nitish Kumar, the BJP spokesperson asked him to come clean on his relation with the RJD Chief.