India, July 8 -- Chief minister Rekha Gupta wrote to her Uttar Pradesh counterpart Yogi Adityanath on Monday, urging him to act against illegal sand mining on the Yamuna floodplains at the Delhi-UP border, noting that it was weakening the river embankments and raising the danger of flood, the chief minister's office said in a statement.

According to the statement, Delhi has urged the UP CM to instruct his officials to initiate a joint interstate demarcation process to clearly define jurisdictional boundaries, allowing for synchronised administrative efforts by both states to safeguard the ecological balance of the region.

HT has not seen a copy of the letter.

The statement said chief minister Gupta shared detailed information about san...