India's Supreme Court has ordered the chief minister of northern Uttar Pradesh state, Mulayam Singh Yadav, to explain the sources of his wealth.
Mr Yadav is the head of the regional Samajwadi Party
The court order came after a petition alleging that Mr Yadav and his sons had amassed millions of rupees since 1977.
Mr Yadav's sons, Akhilesh and Prateek, are also named in the court order.
A senior member of Mr Yadav's Samajwadi Party said the chief minister would respond "appropriately" to the court notice after studying it.
The petition was brought by Vishwanath Chaturvedi, a former Congress party candidate in Uttar Pradesh.
Mr Chaturvedi provided the court with photocopies of what he said were land deals secured by the chief minister over the past 28 years.