A day after the Samajwadi Party (SP) patriarch and former Uttar Pradesh chief minister Mulayam Singh Yadav's daughter-in-law Aparna Yadav joined the Bharatiya Janata Party (BJP), his brother-in-law Pramod Gupta also switched over to the ruling party on Thursday. "The SP is giving shelter to mafias and criminals and there is no point in staying in such a party. Akhilesh has imprisoned Mulayam Singh Yadav. Netaji (Mulayam Singh) and Shivpal were tortured by Akhilesh," Gupta alleged.