Arvind Kejriwal, the RTI activist-turned politician and the convener of the newly-formed Aam Admi Party, is set to make another expose at 5 pm today. His target has not yet been revealed. His earlier exposes were on Mukesh Ambani's Reliance Industries, Sonia Gandhi's son-in-law Robert Vadra, BJP chief Nitin Gadkari and Salman Khurshid's NGO. He had also targeted the government for failing to pay NSG commandos.