Samajwadi Party leader Akhilesh Yadav today lacerated the BJP over allegations that its lawmaker and rape accused Kuldeep Sengar had considerable influence over the case even from inside the confines of the prison, where he has been lodged for over a year. "BJP is a very sanskaari (cultured) party, disciplined party... don't know when the BJP will investigate this case," Akhilesh Yadav told reporters in Lucknow today as a huge controversy broke out over the ordeal the teenage rape survivor had gone through, from losing her father in police custody to two aunts dying in a road accident - which the family alleges was "engineered" by the rape accused.