Preparations are on to take jailed Rashtriya Janata Dal chief Lalu Yadav to AIIMS in Delhi today for treatment after his health deteriorated, officials have said. His son and RJD leader Tejashwi Yadav and family, who are camping in Ranchi, are likely to accompany the former chief minister to the top medical institute in the national capital. Lalu Yadav is being treated for a lung infection at a hospital in Ranchi, where he is serving a sentence after he was convicted in the Bihar fodder scam.