Shiv Sena (UBT) MP Priyanka Chaturvedi has written a letter to the Securities and Exchange Board of India (SEBI) seeking details of the investigation it is conducting against some companies of the Adani group. In a letter dated April 18, which was posted on Twitter on Thursday, Chaturvedi said the SEBI had started a probe against some companies of the Adani group in 2021.