The Maharashtra Police has sought more evidence into the allegations of extortion levelled by Mumbai-based businessman Sonu Jalan against several Thane police officers including former Mumbai Police commissioner Param Bir Singh, Pradeep Sharma, and Rajkumar Kothmire. Sonu Jalan has also accused Param Bir Singh and senior police officer Pradeep Sharma of extorting over Rs 3.5 crore from him after charging …