Indian national Nikhil Gupta is accused of being involved in the plot and is in jail. On October 17, the US Justice Department announced the filing of murder-for-hire and money laundering charges against a former Indian government employee, Vikash Yadav, in connection with the murder plot.

The US is not fully satisfied with India's handling of the investigation into the alleged assassination plot against Sikh separatist Gurpatwant Singh Pannun.

Vedant Patel said the US said there was “valuable engagement” with India's inquiry committee regarding the alleged foiled murder plot of Gurpatwant Pannun.