Dawood Ibrahim's brother Iqbal Kaskar(yellow t-shirt). Photograph:( WION Web Team )
Dawood Ibrahim's brother Iqbal Kaskar has been detained by Mumbai police, media reports said.
Kaskar was detained by Mumbai's Thane police on extortion charges.
Kaskar was arrested but granted bail in an extortion case in 2015.
Kaskar was deported to India from UAE in 2003 in a murder case and the Sara Sahara illegal construction case.
However, he was acquitted in both the cases in 2007.
Last week, the UK authorities had begun seizing Dawood Ibrahim's properties in their country.
Forbes magazine called Dawood one of the richest gangsters of all time.
In 2015, the magazine estimated Dawood's net worth at $ 6.7 billion.