Zee Group chairman Subhash Chandra has sought more time from Delhi Police to join probe into allegations that two senior journalists of his news channels tried to extort Rs 100 crore from industrialist and Congress MP Naveen Jindal's company, police said.

Police had served notice on Chandra Wednesday, asking him to join probe after the arrest of Zee News editor Sudhir Chaudhary and Zee Business editor Samir Ahluwalia following complaint by Jindal Steel and Power Ltd (JSPL) claiming that money was sought to block airing a negative story over coal block allocation.