"Raids were also conducted at the residences of Independent candidate Pawan Kumar Dhoot in Kolkata and former Rajya Sabha member Ajay Maroo in Ranchi," a CBI official said.
Dhoot, an industrialist, was one of the independent candidates in the countermanded Rajya Sabha elections.
The CBI could not search the house of JMM MLA Sita Soren, daughter-in-law of JMM president Shibu Soren, in Bokaro, as it was found locked.
"We have put a seal on her residence and deployed guards there. However, we have conducted raids in another of her houses," the official said.
Thirty-six places were selected for the early morning raid by 36 teams of the premier investigation agency in Ranchi, Jamshedpur, Bokaro, Hazaribagh, Godda, Bihar
