Salem, along with five other accused, is facing trial for demanding Rs 5 crore as protection money from businessman Ashok Gupta, a resident of Greater Kailash here.
The other accused facing trial are Chanchal Mehta, Majid Khan, Pawan Kumar Mittal and Mohd Ashraf.
One of the accused, Sajjan Kumar Soni, died during the pendency of the case.
According to police, Salem allegedly made threat calls to businessman Ashok Gupta in 2002 to extort Rs 5 crore from him as protection money. Police had also recorded some of the alleged telephonic calls.
Salem, facing trial in eight cases in the country including the 1993 Mumbai blasts case, is lodged in a jail in Mumbai.
