NEW DELHI: Nikhil Gupta, an Indian man accused of murder plot of Khalistani terrorist Gurpatwant Singh Pannun, has pled guilty in a US court.Nikhil Gupta (54) pleaded guilty on Friday to charges of murder-for-hire, conspiracy to commit murder-for-hire and conspiracy to commit money laundering before a Manhattan court, news agency Reuters reported. The charges together carry a maximum sentence of up to 40 years in prison, officials said.Gupta, who has been lodged in a Brooklyn jail since his extradition to the United States in June last year, entered the plea before US magistrate Judge Sarah Netburn. He had earlier pleaded not guilty after being extradited from the Czech Republic,…