The I-T had earlier charged four members of Lalu Yadav's family with owning benami property under a tough law that attracts seven years in prison and a hefty fine for those found guilty.
The people involved in this scam are Lalu's son and former Bihar's Deputy Chief Minister Tejashwi Yadav, wife Rabri Devi and daughter Misa Bharti along with her husband Shailesh.
Earlier in January, the I-T department stepped up actions under Benami Act, which provides provisional attachment and subsequent confiscation of benami properties, whether movable or immovable.