Dawood Ibrahim's brother Iqbal Kaskar detained in Mumbai
Kaskar was reportedly deported to India from the United Arab Emirates in 2003.
According to reports, Kaskar was reportedly wanted in a murder case.
He was also held responsible for his alleged role in the controversial Sara Sahara case, where a building came up illegally on government land.
But he was acquitted in both cases by the court in 2007.