Police are investigating the death of a journalist set on fire after he accused a state minister of being involved in illegal mining and land seizures in northern India.

The freelance journalist, Joginder Singh, gave a statement to a magistrate before dying Monday from burns covering 60 percent of his body.

Police inspector general Satish Ganesh said the investigation was opened Wednesday after Singh implicated the Uttar Pradesh state dairy minister, Ram Murti Singh Yadav, as well as two police officers in the June 1 attack. No arrests have been made.

The journalist's son, Raghvendra Singh, said it was not the first time his father was assaulted after writing an article for a local Hindi newspaper accusing the minister of involvement in illegal mining and land grabbing.